Tootfinder

This https://arxiv.org/abs/2211.13383 has been replaced.
link: https://scholar.google.com/scholar?q=a

A Non-Gaussian Bayesian Filter Using Power and Generalized Logarithmic Moments
In this paper, we aim to propose a consistent non-Gaussian Bayesian filter of which the system state is a continuous function. The distributions of the true system states, and those of the system and observation noises, are only assumed Lebesgue integrable with no prior constraints on what function classes they fall within. This type of filter has significant merits in both theory and practice, which is able to ameliorate the curse of dimensionality for the particle filter, a popular non-Gaussi…

Wormhole restrictions from quantum energy inequalities
Eleni-Alexandra Kontou
https://arxiv.org/abs/2405.05963 https://arxiv.org/pdf/…

Wormhole restrictions from quantum energy inequalities
Wormhole solutions, bridges that connect different parts of spacetime, were proposed early in the history of General Relativity. Soon after, it was shown that all wormholes violate classical energy conditions, non-negativity constraints on contractions of the stress-energy tensor. Since these are violated by quantum fields, it was believed that wormholes can be constructed in the context of semiclassical gravity. But negative energies in quantum field theory are not without restriction: quantum…

Stability and Performance Analysis of Discrete-Time ReLU Recurrent Neural Networks
Sahel Vahedi Noori, Bin Hu, Geir Dullerud, Peter Seiler
https://arxiv.org/abs/2405.05236

Stability and Performance Analysis of Discrete-Time ReLU Recurrent Neural Networks
This paper presents sufficient conditions for the stability and $\ell_2$-gain performance of recurrent neural networks (RNNs) with ReLU activation functions. These conditions are derived by combining Lyapunov/dissipativity theory with Quadratic Constraints (QCs) satisfied by repeated ReLUs. We write a general class of QCs for repeated RELUs using known properties for the scalar ReLU. Our stability and performance condition uses these QCs along with a "lifted" representation for the ReLU RNN. We…

A simple prediction of the non-linear matter power spectrum in Brans-Dicke gravity from linear theory
Herman Sletmoen, Hans A. Winther
https://arxiv.org/abs/2403.03786

A simple prediction of the non-linear matter power spectrum in Brans-Dicke gravity from linear theory
Brans-Dicke (BD) was one of the first proposed scalar-tensor theories of gravity, and effectively turns the gravitational constant of General Relativity (GR) time-dependent. Constraints on the BD parameter $ω$ serve as a benchmark for testing GR, which is recovered in the limit $ω\rightarrow \infty$. Current small-scale astrophysical constraints $ω\gtrsim 10^5$ are much tighter than large-scale cosmological constraints $ω\gtrsim 10^3$, but these decouple if the true theory of gravity featur…

On the (in)consistency of perturbation theory at finite temperature
Peter Lowdon, Owe Philipsen
https://arxiv.org/abs/2405.02009 https://

On the (in)consistency of perturbation theory at finite temperature
A well-known difficulty of perturbative approaches to quantum field theory at finite temperature is the necessity to address theoretical constraints that are not present in the vacuum theory. In this work, we use lattice simulations of scalar correlation functions in massive $ϕ^{4}$ theory to analyse the extent to which these constraints affect the perturbative predictions. We find that the standard perturbative predictions deteriorate even in the absence of infrared divergences at relatively …

This https://arxiv.org/abs/2402.02039 has been replaced.
link: https://scholar.google.com/scholar?q=a

Hamiltonian analysis for perturbative $λR$ gravity
The Hamiltonian analysis for the linearized $λR$ gravity around the Minkowski background is performed. The first-class and second-class constraints for arbitrary values of $λ$ are presented, and two physical degrees of freedom are reported. In addition, we remove the second-class constraints, and the generalized Dirac brackets are constructed; then, the equivalence between General Relativity and the $λR$ theory is shown.

This https://arxiv.org/abs/2403.19748 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qu…

General quantum-classical dynamics as measurement based feedback
This note derives the stochastic differential equations and partial differential equation of general hybrid quantum-classical dynamics from the theory of continuous measurement and general (non-Markovian) feedback. The advantage of this approach is an explicit parameterization, without additional positivity constraints. The construction also neatly separates the different effects: how the quantum influences the classical and how the classical influences the quantum. This modular presentation gi…

Reviving Horndeski after GW170817 by Kaluza-Klein compactifications
S. Mironov, A. Shtennikova, M. Valencia-Villegas
https://arxiv.org/abs/2405.02281 https…

Reviving Horndeski after GW170817 by Kaluza-Klein compactifications
The application of Horndeski theory/ Galileons for late time cosmology is heavily constrained by the strict coincidence in the speed of propagation of gravitational and electromagnetic waves. These constraints presuppose that the minimally coupled photon is not modified, not even at the scales where General Relativity (GR) may need modification. We find that the 4D Galileon obtained from a Kaluza-Klein compactification of its higher dimensional version is a natural unified modification of GR an…

This https://arxiv.org/abs/2402.02039 has been replaced.
link: https://scholar.google.com/scholar?q=a

Hamiltonian analysis for perturbative $λR$ gravity
The Hamiltonian analysis for the linearized $λR$ gravity around the Minkowski background is performed. The first-class and second-class constraints for arbitrary values of $λ$ are presented, and two physical degrees of freedom are reported. In addition, we remove the second-class constraints, and the generalized Dirac brackets are constructed; then, the equivalence between General Relativity and the $λR$ theory is shown.

Quantum many-body scars and non-thermal behaviour in Fredkin spin chains
Luke Causer, Mari Carmen Ba\~nuls, Juan P. Garrahan
https://arxiv.org/abs/2403.03986

Quantum many-body scars and non-thermal behaviour in Fredkin spin chains
We study the dynamics and thermalization of the Fredkin spin chain, a system with local three-body interactions, particle conservation and explicit kinetic constraints. We consider deformations away from its stochastic point in order to tune between regimes where kinetic energy dominates and those where potential energy does. By means of exact diagonalisation, perturbation theory and variational matrix product states, we show that the stochastic point is where a transition occurs between a phas…

DiaryHelper: Exploring the Use of an Automatic Contextual Information Recording Agent for Elicitation Diary Study
Junze Li, Changyang He, Jiaxiong Hu, Boyang Jia, Alon Halevy, Xiaojuan Ma
https://arxiv.org/abs/2404.19738 https://arxiv.org/pdf/2404.19738
arXiv:2404.19738v1 Announce Type: new
Abstract: Elicitation diary studies, a type of qualitative, longitudinal research method, involve participants to self-report aspects of events of interest at their occurrences as memory cues for providing details and insights during post-study interviews. However, due to time constraints and lack of motivation, participants' diary entries may be vague or incomplete, impairing their later recall. To address this challenge, we designed an automatic contextual information recording agent, DiaryHelper, based on the theory of episodic memory. DiaryHelper can predict five dimensions of contextual information and confirm with participants. We evaluated the use of DiaryHelper in both the recording period and the elicitation interview through a within-subject study (N=12) over a period of two weeks. Our results demonstrated that DiaryHelper can assist participants in capturing abundant and accurate contextual information without significant burden, leading to a more detailed recall of recorded events and providing greater insights.

k-Fold Gaussian Random Matrix Ensembles I: Forcing Structure into Random Matrices
Michael Brodskiy, Owen L. Howell
https://arxiv.org/abs/2405.01727 https:/…

k-Fold Gaussian Random Matrix Ensembles I: Forcing Structure into Random Matrices
Random Matrix Theory is a powerful tool in applied mathematics. Three canonical models of random matrix distributions are the Gaussian Orthogonal, Unitary and Symplectic Ensembles. For matrix ensembles defined on k-fold tensor products of identical vector spaces we motivate natural generalizations of the Gaussian Ensemble family. We show how the k-fold invariant constraints are satisfied in both disordered spin models and systems with gauge symmetries, specifically quantum double models. We use…

This https://arxiv.org/abs/2402.01213 has been replaced.
link: https://scholar.google.com/scholar?q=a

Forcing with Language Fragments, Extending Namba Forcing, and Models of Theories with Constraints in Interpretation
We develop a forcing framework based on the idea of amalgamating language fragments into a theory with a canonical Henkin model. We then demonstrate the usefulness of this framework by applying it to both the extended Namba problem and the analysis of models of certain theories with constraints in interpretation (TCIs). The foundations for a theory of TCIs and their models are laid in parallel to the development of our framework, and are of independent interest.

This https://arxiv.org/abs/2310.08502 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

Strengthening interacting agegraphic dark energy DGP constraints with local measurements and multimessenger forecastings
An explanation of the nature of dark energy has been treated in extra dimensions within the scheme of string theory. One of the most successful models is inspired by the Dvali-Gabadadze-Porrati (DGP) model, in which the universe is a 4-dimensional brane embedded in a 5-dimensional Minkowski space-time. In this landscape, the study of the evolution of the normal branch has led us to different kinds of dark energy, where the most simple case is the cosmological constant $Λ$. Moreover, other viab…

Robust Safety-Critical Control for Systems with Sporadic Measurements and Dwell Time Constraints
Joseph Breeden, Luca Zaccarian, Dimitra Panagou
https://arxiv.org/abs/2403.03663 <…

Robust Safety-Critical Control for Systems with Sporadic Measurements and Dwell Time Constraints
This paper presents extensions of control barrier function (CBF) theory to systems with disturbances wherein a controller only receives measurements infrequently and operates open-loop between measurements, while still satisfying state constraints. The paper considers both impulsive and continuous actuators, and models the actuators, measurements, disturbances, and timing constraints as a hybrid dynamical system. We then design an open-loop observer that bounds the worst-case uncertainty betwee…

Constraints On Covariant WIMP-Nucleon Effective Field Theory Interactions from the First Science Run of the LUX-ZEPLIN Experiment
J. Aalbers, D. S. Akerib, A. K. Al Musalhi, F. Alder, C. S. Amarasinghe, A. Ames, T. J. Anderson, N. Angelides, H. M. Ara\'ujo, J. E. Armstrong, M. Arthurs, A. Baker, S. Balashov, J. Bang, E. E. Barillier, J. W. Bargemann, K. Beattie, T. Benson, A. Bhatti, A. Biekert, T. P. Biesiadzinski, H. J. Birch, E. J. Bishop, G. M. Blockinger, B. Boxer, C. A. J. Br…

Constraints On Covariant WIMP-Nucleon Effective Field Theory Interactions from the First Science Run of the LUX-ZEPLIN Experiment
The first science run of the LUX-ZEPLIN (LZ) experiment, a dual-phase xenon time project chamber operating in the Sanford Underground Research Facility in South Dakota, USA, has reported leading limits on spin-independent WIMP-nucleon interactions and interactions described from a non-relativistic effective field theory (NREFT). Using the same 5.5~t fiducial mass and 60 live days of exposure we report on the results of a relativistic extension to the NREFT. We present constraints on couplings f…

Nonequilibrium relaxation and odd-even effect in finite-temperature electron gases
Eric Nilsson, Ulf Gran, Johannes Hofmann
https://arxiv.org/abs/2405.03635

Nonequilibrium relaxation and odd-even effect in finite-temperature electron gases
Pauli blocking in Fermi liquids imposes strong phase-space constraints on quasiparticle lifetimes, leading to a well-known quadratic-in-temperature decay rate of quasiparticle modes at low temperatures. In two-dimensional systems, however, even longer-lived modes are predicted (dubbed "odd-parity" modes). Here, we present an efficient method to evaluate the full spectrum of relaxational eigenmodes of a Fermi liquid within kinetic theory. We employ this method to study the experimentally relevan…

This https://arxiv.org/abs/2304.14587 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Smooth Indirect Solution Method for State-constrained Optimal Control Problems with Nonlinear Control-affine Systems
This paper proposes a new indirect solution method for solving state-constrained optimal control problems by revisiting the well-established optimal control theory and addressing the long-standing issue of discontinuous control and costate due to pure state inequality constraints. It is well-known that imposing pure state path constraints in optimal control problems introduces discontinuities in the control and costate, rendering the classical indirect solution methods ineffective to numericall…

Equational Theories and Validity for Logically Constrained Term Rewriting (Full Version)
Takahito Aoto, Naoki Nishida, Jonas Sch\"opf
https://arxiv.org/abs/2405.01174

Equational Theories and Validity for Logically Constrained Term Rewriting (Full Version)
Logically constrained term rewriting is a relatively new formalism where rules are equipped with constraints over some arbitrary theory. Although there are many recent advances with respect to rewriting induction, completion, complexity analysis and confluence analysis for logically constrained term rewriting, these works solely focus on the syntactic side of the formalism lacking detailed investigations on semantics. In this paper, we investigate a semantic side of logically constrained term r…

This https://arxiv.org/abs/2403.13982 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Virasoro constraints and representations for quiver moduli spaces
We study the Virasoro constraints for moduli spaces of representations of quiver with relations by Joyce's vertex algebras. Using the framed Virasoro constraints, we construct a representation of half of the Virasoro algebra on the cohomology of moduli stacks of quiver representations under smoothness assumption. By exploiting the non-commutative nature of the Virasoro operators, we apply our theory for quivers to del Pezzo surfaces using exceptional collections. In particular, the Virasoro con…

This https://arxiv.org/abs/2402.13951 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

A Post-Newtonian Analysis of Regularized 4D-EGB Theory: Complete Set of PPN Parameters and Observational Constraints
We performed a post-Newtonian analysis of the regularized four-dimensional Einstein-Gauss-Bonnet gravitational theory (4D-EGB). The resulting metric differs from the classical parametrized post-Newtonian (PPN) formalism in that a new gravitational potential arises from the integration of the approximate field equations. We also investigated the conserved quantities and equations of motion for massive bodies and light rays to a certain degree. By computing the predicted periastron advance rate i…

Constraints on the Dirac spectrum from chiral symmetry restoration
Matteo Giordano
https://arxiv.org/abs/2404.03546 https://arxiv.org…

Constraints on the Dirac spectrum from chiral symmetry restoration
I derive constraints on the Dirac spectrum in the chirally symmetric phase of a gauge theory with two massless fermion flavors. Using only general properties of correlation functions of scalar and pseudoscalar bilinears, I prove that in the chiral limit of vanishing quark mass $m$ all the corresponding susceptibilities must be power series in $m^2$ with finite coefficients, from which spectral constraints follow. I then use them to show that effective breaking of the anomalous $\mathrm{U}(1)_A$…

This https://arxiv.org/abs/2312.02061 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Analysis of Neutron Star $f-$mode Oscillations in General Relativity with Spectral Representation of Nuclear Equations of State
We study quasinormal $f-$mode oscillations in neutron star(NS) interiors within the linearized General Relativistic formalism. We utilize approximately 9000 nuclear Equations of State (EOS) using spectral representation techniques, incorporating constraints on nuclear saturation properties, chiral Effective Field Theory ($χ$EFT) for pure neutron matter, and perturbative Quantum Chromodynamics (pQCD) for densities pertinent to NS cores. The median values of f-mode frequency, $ν_f$ (damping tim…

This https://arxiv.org/abs/2402.01213 has been replaced.
link: https://scholar.google.com/scholar?q=a

Forcing with Language Fragments, Extending Namba Forcing, and Models of Theories with Constraints in Interpretation
We develop a forcing framework based on the idea of amalgamating language fragments into a theory with a canonical Henkin model. We then demonstrate the usefulness of this framework by applying it to both the extended Namba problem and the analysis of models of certain theories with constraints in interpretation (TCIs). The foundations for a theory of TCIs and their models are laid in parallel to the development of our framework, and are of independent interest.

A Bayesian mixture model approach to quantifying the empirical nuclear saturation point
C. Drischler, P. G. Giuliani, S. Bezoui, J. Piekarewicz, F. Viens
https://arxiv.org/abs/2405.02748

A Bayesian mixture model approach to quantifying the empirical nuclear saturation point
The equation of state (EOS) in the limit of infinite symmetric nuclear matter exhibits an equilibrium density, $n_0 \approx 0.16 \, \mathrm{fm}^{-3}$, at which the pressure vanishes and the energy per particle attains its minimum, $E_0 \approx -16 \, \mathrm{MeV}$. Although not directly measurable, the nuclear saturation point $(n_0,E_0)$ can be extrapolated by density functional theory (DFT), providing tight constraints for microscopic interactions derived from chiral effective field theory (E…

Accounting for the Effects of Probabilistic Uncertainty During Fast Charging of Lithium-ion Batteries
Minsu Kim, Joachim Schaeffer, Marc D. Berliner, Berta Pedret Sagnier, Rolf Findeisen, Richard D. Braatz
https://arxiv.org/abs/2405.01681

Accounting for the Effects of Probabilistic Uncertainty During Fast Charging of Lithium-ion Batteries
Batteries are nonlinear dynamical systems that can be modeled by Porous Electrode Theory models. The aim of optimal fast charging is to reduce the charging time while keeping battery degradation low. Most past studies assume that model parameters and ambient temperature are a fixed known value and that all PET model parameters are perfectly known. In real battery operation, however, the ambient temperature and the model parameters are uncertain. To ensure that operational constraints are satisf…

This https://arxiv.org/abs/2311.02865 has been replaced.
link: https://scholar.google.com/scholar?q=a

Geometrically-Shaped Constellation for Visible Light Communications at Short Blocklength
In this paper, we present a general framework of designing geometrically shaped constellations for short-packet visible light communications with a peak- and an average-intensity constraints. By leveraging tools from large deviation theory, we first characterize the second-order asymptotics of the optimal constellation shaping region under aforementioned intensity constraints, which serves as a good performance measure for the best geometric shaping in finite blocklength. To further incorporate…

This https://arxiv.org/abs/2312.11022 has been replaced.
link: https://scholar.google.com/scholar?q=a

Solving mathematical programs with complementarity constraints arising in nonsmooth optimal control
This paper examines solution methods for mathematical programs with complementarity constraints (MPCC) obtained from the time-discretization of optimal control problems (OCPs) subject to nonsmooth dynamical systems. The MPCC theory and stationarity concepts are reviewed and summarized. The focus is on relaxation-based methods for MPCCs, which solve a (finite) sequence of more regular nonlinear programs (NLP), where a regularization/homotopy parameter is driven to zero. Such methods perform reas…

Virasoro constraints and representations for quiver moduli spaces
Woonam Lim, Miguel Moreira
https://arxiv.org/abs/2403.13982 https://

Virasoro constraints and representations for quiver moduli spaces
We study the Virasoro constraints for moduli spaces of representations of quiver with relations by Joyce's vertex algebras. Using the framed Virasoro constraints, we construct a representation of half of the Virasoro algebra on the cohomology of moduli stacks of quiver representations under smoothness assumption. By exploiting the non-commutative nature of the Virasoro operators, we apply our theory for quivers to del Pezzo surfaces using exceptional collections. In particular, the Virasoro con…

Linear and Non-Linear Models for Master Scheduling of Dynamic Resources Product Mix
Ayman R. Mohammed, Ahmad Abu Sleem, Mohammad A. M. Abdel-Aal
https://arxiv.org/abs/2402.11306 <…

Linear and Non-Linear Models for Master Scheduling of Dynamic Resources Product Mix
The literature on master production scheduling for product mix problems under the Theory of Constraints (TOC) was considered by many previous studies. Most studies assume a static resources availability. In this study, the raw materials supplied to the manufacturer is considered as dynamic depending on the results of the problem. Thus, an integer linear heuristic, an integer non-linear optimization model, and a basic non-linear model are developed to find a good solution of the problem. The res…

MultiSTOP: Solving Functional Equations with Reinforcement Learning
Alessandro Trenta, Davide Bacciu, Andrea Cossu, Pietro Ferrero
https://arxiv.org/abs/2404.14909

MultiSTOP: Solving Functional Equations with Reinforcement Learning
We develop MultiSTOP, a Reinforcement Learning framework for solving functional equations in physics. This new methodology produces actual numerical solutions instead of bounds on them. We extend the original BootSTOP algorithm by adding multiple constraints derived from domain-specific knowledge, even in integral form, to improve the accuracy of the solution. We investigate a particular equation in a one-dimensional Conformal Field Theory.

This https://arxiv.org/abs/2207.04856 has been replaced.
link: https://scholar.google.com/scholar?q=a

Research Joint Ventures: The Role of Financial Constraints
This paper provides a novel theory of research joint ventures for financially constrained firms. When firms choose R&D portfolios, an RJV can help to coordinate research efforts, reducing investments in duplicate projects. This can free up resources, increase the variety of pursued projects and thereby increase the probability of discovering the innovation. RJVs improve innovation outcomes when market competition is weak and external financing conditions are bad. An RJV may increase the innovat…

Unified Differentiable Learning of the Electric Enthalpy and Dielectric Properties with Exact Physical Constraints
Stefano Falletta, Andrea Cepellotti, Chuin Wei Tan, Anders Johansson, Albert Musaelian, Cameron J. Owen, Boris Kozinsky
https://arxiv.org/abs/2403.17207

Unified Differentiable Learning of the Electric Enthalpy and Dielectric Properties with Exact Physical Constraints
The modern theory of polarization and electric enthalpy functionals have paved the way to first-principles studies of polarization in crystalline, disordered and liquid materials. However, calculating the polarization in large-scale ab-initio molecular dynamics remains prohibitive due to the high computational cost involved. In this work, we introduce a machine-learning formulation that simultaneously learns to predict electric enthalpy, atomic forces, polarization, Born charges, and polarizabi…

On the Geometry of N=2 Minkowski Vacua of Gauged N=2 Supergravity Theories in Four Dimensions
Hans Jockers, S\"oren Kotlewski
https://arxiv.org/abs/2404.11655

On the Geometry of N=2 Minkowski Vacua of Gauged N=2 Supergravity Theories in Four Dimensions
Gauging isometries of four-dimensional N=2 supergravity theories yields an N=2 supersymmetric theory with a scalar potential. In this note, we study the well-known constraints for four-dimensional N=2 Minkowski vacua of such theories. We propose that classically a projective special Kähler submanifold of the projective Kähler target space of the ungauged theory describes the moduli space of the complex scalar fields of massless vector multiplets for N=2 Minkowski vacua configurations, which t…

This https://arxiv.org/abs/2402.01213 has been replaced.
link: https://scholar.google.com/scholar?q=a

Forcing with Language Fragments, Extending Namba Forcing, and Models of Theories with Constraints in Interpretation
We develop a forcing framework based on the idea of amalgamating language fragments into a theory with a canonical Henkin model. We then demonstrate the usefulness of this framework by applying it to both the extended Namba problem and the analysis of models of certain theories with constraints in interpretation (TCIs). The foundations for a theory of TCIs and their models are laid in parallel to the development of our framework, and are of independent interest.

Towards quantum gravity with neural networks: Solving quantum Hamilton constraints of 3d Euclidean gravity in the weak coupling limit
Hanno Sahlmann, Waleed Sherif
https://arxiv.org/abs/2405.00661

Towards quantum gravity with neural networks: Solving quantum Hamilton constraints of 3d Euclidean gravity in the weak coupling limit
We consider 3-dimensional Euclidean gravity in the weak coupling limit of Smolin and show that it is BF-theory with $\text{U(1)}^3$ as a Lie group. The theory is quantised using loop quantum gravity methods. The kinematical degrees of freedom are truncated, on account of computational feasibility, by fixing a graph and deforming the algebra of the holonomies to impose a cutoff on the charge vectors. This leads to a quantum theory related to $\text{U}_q \text{(1)}^3$ BF-theory. The effect of imp…

This https://arxiv.org/abs/2312.02030 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepe…

First Constraints on WIMP-Nucleon Effective Field Theory Couplings in an Extended Energy Region From LUX-ZEPLIN
Following the first science results of the LUX-ZEPLIN (LZ) experiment, a dual-phase xenon time projection chamber operating from the Sanford Underground Research Facility in Lead, South Dakota, USA, we report the initial limits on a model-independent non-relativistic effective field theory describing the complete set of possible interactions of a weakly interacting massive particle (WIMP) with a nucleon. These results utilize the same 5.5 t fiducial mass and 60 live days of exposure collected f…

This https://arxiv.org/abs/1610.09621 has been replaced.
link: https://scholar.google.com/scholar?q=a

Hamiltonian analysis of the BFCG theory for a strict Lie 2-group
We perform a complete Hamiltonian analysis of the BFCG action for a general Lie 2-group by using the Dirac procedure. We show that the resulting dynamical constraints eliminate all local degrees of freedom which implies that the BFCG theory is a topological field theory.

Uncertainty relation and the constrained quadratic programming
Lin Zhang, Dade Wu, Ming-Jing Zhao, Hua Nan
https://arxiv.org/abs/2404.18671 https://…

Uncertainty relation and the constrained quadratic programming
The uncertainty relation is a fundamental concept in quantum theory, plays a pivotal role in various quantum information processing tasks. In this study, we explore the additive uncertainty relation pertaining to two or more observables, in terms of their variance,by utilizing the generalized Gell-Mann representation in qudit systems. We find that the tight state-independent lower bound of the variance sum can be characterized as a quadratic programming problem with nonlinear constraints in opt…

Graph Theory for Consent Management: A New Approach for Complex Data Flows
Dorota Filipczuk, Enrico H. Gerding, George Konstantinidis
https://arxiv.org/abs/2403.11361

Graph Theory for Consent Management: A New Approach for Complex Data Flows
Through legislation and technical advances users gain more control over how their data is processed, and they expect online services to respect their privacy choices and preferences. However, data may be processed for many different purposes by several layers of algorithms that create complex data workflows. To date, there is no existing approach to automatically satisfy fine-grained privacy constraints of a user in a way which optimises the service provider's gains from processing. In this art…

This https://arxiv.org/abs/2208.01767 has been replaced.
link: https://scholar.google.com/scholar?q=a

Elementary spectral invariants and quantitative closing lemmas for contact three-manifolds
In a previous paper, we defined an "elementary" alternative to the ECH capacities of symplectic four-manifolds, using max-min energy of holomorphic curves subject to point constraints, and avoiding the use of Seiberg-Witten theory. In the present paper we use a variant of this construction to define an alternative to the ECH spectrum of a contact three-manifold. The alternative spectrum has applications to Reeb dynamics in three dimensions. In particular, we adapt ideas from a previous joint pa…

Lessons from ATLAS and CMS measurements of Higgs boson decays to second generation fermions
Yosef Nir, Purvaash Panduranghan Udhayashankar
https://arxiv.org/abs/2404.16545

Lessons from ATLAS and CMS measurements of Higgs boson decays to second generation fermions
There is now experimental evidence for Higgs boson decay into a pair of muons, and significant constraints on the Higgs boson decay into a charm quark-antiquark pair. The data on Higgs boson decays into second generation fermions probes various extensions of the Standard Model. We analyze the implications for the Standard Model effective field theory (SMEFT), without and with minimal flavor violation (MFV), for two Higgs doublet models (2HDM) with natural flavor conservation (NFC), for models w…

Non-supersymmetric duality cascade of QCD(BF) via semiclassics on $\mathbb{R}^2\times T^2$ with the baryon-'t Hooft flux
Yui Hayashi, Yuya Tanizaki, Hiromasa Watanabe
https://arxiv.org/abs/2404.16803

Non-supersymmetric duality cascade of QCD(BF) via semiclassics on $\mathbb{R}^2\times T^2$ with the baryon-'t Hooft flux
We study the phase diagrams of the bifundamental QCD (QCD(BF)) of different ranks, which is the $4$d $SU(N_1) \times SU(N_2)$ gauge theory coupled with a bifundamental Dirac fermion. After discussing the anomaly constraints on possible vacuum structures, we apply a novel semiclassical approach on $\mathbb{R}^2\times T^2$ with the baryon-'t Hooft flux to obtain the concrete dynamics. The $2$d effective theory is derived by the dilute gas approximation of center vortices, and it serves as the bas…

Again shamelessly copying from the excellent ideas of @…, I’ve updated my wavefunction collapse code to allow edge-constraints which then let you generate tileable output and then you can make cube nets from them.
In theory you can print, cut, and glue this to get your own CarcoCube™. Probably wants to be cardboard rather than printer pap…

Local Approximation of Secrecy Capacity
Emmanouil M. Athanasakos, Nicholas Kalouptsidis, Hariprasad Manjunath
https://arxiv.org/abs/2403.13345 https://

Local Approximation of Secrecy Capacity
This paper uses Euclidean Information Theory (EIT) to analyze the wiretap channel. We investigate a scenario of efficiently transmitting a small amount of information subject to compression rate and secrecy constraints. We transform the information-theoretic problem into a linear algebra problem and obtain the perturbed probability distributions such that secrecy is achievable. Local approximations are being used in order to obtain an estimate of the secrecy capacity by solving a generalized ei…

This https://arxiv.org/abs/2403.17675 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Chattering Phenomena in Time-Optimal Control for High-Order Chain-of-Integrators Systems with Full State Constraints
Time-optimal control for high-order chain-of-integrators systems with full state constraints and arbitrary given terminal states remains an open and challenging problem in optimal control theory domain. However, optimal control's behaviors in high-order problems lack of precision characterization, even where the existence of chattering phenomena remain unknown and overlooked. This paper establishes a theoretical framework of chattering phenomena in the problem, focusing on the uniqueness of sta…

This https://arxiv.org/abs/2210.05266 has been replaced.
link: https://scholar.google.com/scholar?q=a

Virasoro constraints on moduli of sheaves and vertex algebras
In enumerative geometry, Virasoro constraints were first conjectured in Gromov-Witten theory with many new recent developments in the sheaf theoretic context. In this paper, we rephrase the sheaf-theoretic Virasoro constraints in terms of primary states coming from a natural conformal vector in Joyce's vertex algebra. This shows that Virasoro constraints are preserved under wall-crossing. As an application, we prove the conjectural Virasoro constraints for moduli spaces of torsion-free sheaves …

This https://arxiv.org/abs/2306.15715 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Unveiling Neutrino Halos with CMB Lensing
The existence of a cosmic neutrino background has been inferred indirectly from cosmological surveys through its effect on the linear-theory evolution of primordial density perturbations, as well as from measurements of the primordial abundances of light elements. Constraints on the masses of the three neutrino species imply that at least two of them move non-relativistically today. As a consequence, non-linear evolution of density perturbations results in the formation of neutrino halos around…

Local topology for periodic Hamiltonians and fuzzy tori
Nora Doll, Terry Loring, Hermann Schulz-Baldes
https://arxiv.org/abs/2403.18931 https://

Local topology for periodic Hamiltonians and fuzzy tori
A variety of local index formulas is constructed for quantum Hamiltonians with periodic boundary conditions. All dimensions of physical space as well as many symmetry constraints are covered, notably one-dimensional systems in Class DIII as well as two- and three-dimensional systems in Class AII. The constructions are based on several periodic variations of the spectral localizer and are rooted in the existence of underlying fuzzy tori. For these latter, a general invariant theory is developed.

This https://arxiv.org/abs/2402.07362 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hep…

Exploring Composite Dark Matter with an SU(4) gauge theory with 1 fermion flavor
Several SU(N) gauge theories have been explored as candidates for producing stable dark matter particles that can explain their relative abundance, while also evading current constraints from direct, indirect and collider searches. In this talk, I will present the confinement and spectral properties of a new model we name "Hyper Stealth Dark Matter", which involves an SU(4) gauge theory with 1 quark flavor. The lightest baryon in this theory can be a potential dark matter candidate as it is pro…

This https://arxiv.org/abs/2311.07039 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Time-Optimal Control for High-Order Chain-of-Integrators Systems with Full State Constraints and Arbitrary Terminal States (Part I, Extended Version)
Time-optimal control for high-order chain-of-integrators systems with full state constraints and arbitrary given terminal states remains a challenging problem in the optimal control theory domain, yet to be resolved. To enhance further comprehension of the problem, this paper establishes a novel notation system and theoretical framework, providing the switching manifold for high-order problems in the form of switching laws. Through deriving properties of switching laws on signs and dimension, t…

This https://arxiv.org/abs/2202.09333 has been replaced.
link: https://scholar.google.com/scholar?q=a

On the complex structure of Yang-Mills theory
We consider the coupled set of spectral Dyson-Schwinger equations in Yang-Mills theory for ghost and gluon propagators, which gives us access to the ghost and gluon spectral functions. The set-up is used for a systematic analytic evaluation of the constraints on generalised spectral representations in Yang-Mills theory that are most relevant for informed spectral reconstructions. We also provide numerical results for the coupled set of spectral functions for a large range of potential mass gaps…

This https://arxiv.org/abs/2306.03045 has been replaced.
link: https://scholar.google.com/scholar?q=a

Designing Equilibria in Concurrent Games with Social Welfare and Temporal Logic Constraints
In game theory, mechanism design is concerned with the design of incentives so that a desired outcome of the game can be achieved. In this paper, we explore the concept of equilibrium design, where incentives are designed to obtain a desirable equilibrium that satisfies a specific temporal logic property. Our study is based on a framework where system specifications are represented as temporal logic formulae, games as quantitative concurrent game structures, and players' goals as mean-payoff ob…

Relaxation of first-class constraints and the quantization of gauge theories: from "matter without matter" to the reappearance of time in quantum gravity
Roberto Casadio, Leonardo Chataignier, Alexander Yu. Kamenshchik, Francisco G. Pedro, Alessandro Tronconi, Giovanni Venturi
https://arxiv.org/abs/2402.12437

Relaxation of first-class constraints and the quantization of gauge theories: from "matter without matter" to the reappearance of time in quantum gravity
We make a conceptual overview of a particular approach to the initial-value problem in canonical gauge theories. We stress how the first-class phase-space constraints may be relaxed if we interpret them as fixing the values of new degrees of freedom. This idea goes back to Fock and Stueckelberg, leading to restrictions of the gauge symmetry of a theory, and it corresponds, in certain cases, to promoting constants of Nature to physical fields. Recently, different versions of this formulation hav…

A General Theory of Static Response for Markov Jump Processes
Timur Aslyamov, Massimiliano Esposito
https://arxiv.org/abs/2402.13990 https://

A General Theory of Static Response for Markov Jump Processes
We consider Markov jump processes on a graph described by a rate matrix that depends on various control parameters. We derive explicit expressions for the static responses of edge currents and steady-state probabilities. We show that they are constrained by the graph topology (i.e. the incidence matrix) by deriving response relations (i.e. linear constraints linking the different responses) and topology-dependent bounds. For unicyclic networks, all scaled current sensitivities are between zero …

This https://arxiv.org/abs/2402.13080 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qu…

A thermodynamic approach to quantifying incompatible instruments
We consider a thermodynamic framework to quantify instrument incompatibility through a resource theory subject to thermodynamic constraints. In this resource theory, we use the minimal thermalisation time needed to erase incompatibility's signature to measure how incompatible an instrument is. We show that this measure has a clear operational meaning in some work extraction tasks, thereby uncovering the thermodynamic advantages of incompatible instruments. We further analyse the possibility and…

This https://arxiv.org/abs/2403.09325 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Improved Constraints on the Variation of the Weak Scale from Big Bang Nucleosynthesis
We analyze the recent EMPRESS data on the $^4$He abundance in Big Bang nucleosynthesis as a function of the Higgs vacuum expectation value $v$ and compare our calculation to the recently published work of Burns et al.~[1]. The EMPRESS result for the $^4$He abundance can be explained within $2σ$ by $0.03 \leq δv / v \leq 0.07$. However, as first noted in~[1], a Higgs VEV in this range would worsen the discrepancy between theory and experiment for the deuterium abundance significantly.

Reparametrization invariant action for Gravity with Dynamical Determinant of Metric
J. Kluson
https://arxiv.org/abs/2402.19010 https://

Reparametrization invariant action for Gravity with Dynamical Determinant of Metric
We present manifestly reparametrization invariant action for theory of gravity with dynamical determinant of metric. We show that it is similar to a reparametrization invariant action for unimodular gravity. We determine canonical form of the action and study structure of constraints.

This https://arxiv.org/abs/2306.15715 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Unveiling Neutrino Halos with CMB Lensing
The existence of a cosmic neutrino background has been inferred indirectly from cosmological surveys through its effect on the linear-theory evolution of primordial density perturbations, as well as from measurements of the primordial abundances of light elements. Constraints on the masses of the three neutrino species imply that at least two of them move non-relativistically today. As a consequence, non-linear evolution of density perturbations results in the formation of neutrino halos around…

This https://arxiv.org/abs/2311.07039 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Time-Optimal Control for High-Order Chain-of-Integrators Systems with Full State Constraints and Arbitrary Terminal States (Part I, Extended Version)
Time-optimal control for high-order chain-of-integrators systems with full state constraints and arbitrary given terminal states remains a challenging problem in the optimal control theory domain, yet to be resolved. To enhance further comprehension of the problem, this paper establishes a novel notation system and theoretical framework, providing the switching manifold for high-order problems in the form of switching laws. Through deriving properties of switching laws on signs and dimension, t…

This https://arxiv.org/abs/2210.02626 has been replaced.
link: https://scholar.google.com/scholar?q=a

Decision Making under Cumulative Prospect Theory: An Alternating Direction Method of Multipliers
This paper proposes a novel numerical method for solving the problem of decision making under cumulative prospect theory (CPT), where the goal is to maximize utility subject to practical constraints, assuming only finite realizations of the associated distribution are available. Existing methods for CPT optimization rely on particular assumptions that may not hold in practice. To overcome this limitation, we present the first numerical method with a theoretical guarantee for solving CPT optimiz…

This https://arxiv.org/abs/2308.05093 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

On the Quantization of FLPR Model
We quantize the Friedberg-Lee-Pang-Ren (FLPR) model, using an admissible gauge condition, within the framework of modified Faddeev-Jackiw formalism. Further, we deduce the gauge symmetries and establish off-shell nilpotent and absolutely anti-commuting (anti-)BRST symmetries. We also show that the physical states of the theory are annihilated by the first class constraints which is consistent \textit{à la} Dirac formalism.

Observational Constraints on the Maximum Masses of White Dwarfs, Neutron Stars, and Exotic Stars in Non-Minimal Derivative Coupling Gravity
M. D. Danarianto, I. Prasetyo, A. Suroso, B. E. Gunara, A. Sulaksono
https://arxiv.org/abs/2403.19450

Observational Constraints on the Maximum Masses of White Dwarfs, Neutron Stars, and Exotic Stars in Non-Minimal Derivative Coupling Gravity
The advancement of astronomical observations opens the possibility of testing our current understanding of gravitational theory in the strong-field regime and probing any deviation from general relativity. We explore to what extent compact stars predicted by non-minimal derivative coupling (NMDC) gravity theory agree with observed data. We investigate white dwarfs (WDs), neutron stars (NSs), and quark stars (QSs) mass and radius in various values of constant scalar $|Q_{\infty}|$ at c…

Efficient Solvers for Wyner Common Information with Application to Multi-Modal Clustering
Teng-Hui Huang, Hesham El Gamal
https://arxiv.org/abs/2402.14266 …

Efficient Solvers for Wyner Common Information with Application to Multi-Modal Clustering
We propose two novel extensions of the Wyner common information optimization problem. Each relaxes one fundamental constraints in Wyner's formulation. The \textit{Variational Wyner Common Information} relaxes the matching constraint to the known distribution while imposing conditional independence to the feasible solution set. We derive a tight surrogate upper bound of the obtained unconstrained Lagrangian via the theory of variational inference, which can be minimized efficiently. Our solver c…

This https://arxiv.org/abs/2112.07688 has been replaced.
link: https://scholar.google.com/scholar?q=a

Constraints on subleading interactions in beta decay Lagrangian
We discuss the effective field theory (EFT) for nuclear beta decay. The general quark-level EFT describing charged-current interactions between quarks and leptons is matched to the nucleon-level non-relativistic EFT at the O(MeV) momentum scale characteristic for beta transitions. The matching takes into account, for the first time, the effect of all possible beyond-the-Standard-Model interactions at the subleading order in the recoil momentum. We calculate the impact of all the Wilson coeffici…

Dynamic fluctuation-dissipation theory for Generalized Langevin Equations: constructive constraints, stability and realizability
Massimiliano Giona, Giuseppe Procopio, Chiara Pezzotti
https://arxiv.org/abs/2403.05431

Dynamic fluctuation-dissipation theory for Generalized Langevin Equations: constructive constraints, stability and realizability
Using the initial-value formulation, a dynamic theory for systems evolving according to a Generalized Langevin Equation is developed, providing more restrictive conditions on the existence of equilibrium behavior and its fluctuation-dissipation implications. For systems fulfilling the property of local realizability, that for all the practical purposes corresponds to the postulate of the existence of a Markovian embedding, physical constraints, expressed in the form of dissipative stability a…

On some global implicit function theorems for set-valued inclusions with applications to parametric vector optimization
Amos Uderzo
https://arxiv.org/abs/2405.01123

On some global implicit function theorems for set-valued inclusions with applications to parametric vector optimization
The present paper deals with the perturbation analysis of set-valued inclusion problems, a problem format whose relevance has recently emerged in such contexts as robust and vector optimization as well as in vector equilibrium theory. The set-valued inclusions here considered are parameterized by variables belonging to a topological space, with and without constraints. By proper techniques of variational analysis, some qualitative global implicit function theorems are established, which ensure …

This https://arxiv.org/abs/2311.07039 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Time-Optimal Control for High-Order Chain-of-Integrators Systems with Full State Constraints and Arbitrary Terminal States (Part I, Extended Version)
Time-optimal control for high-order chain-of-integrators systems with full state constraints and arbitrary given terminal states remains a challenging problem in the optimal control theory domain, yet to be resolved. To enhance further comprehension of the problem, this paper establishes a novel notation system and theoretical framework, providing the switching manifold for high-order problems in the form of switching laws. Through deriving properties of switching laws on signs and dimension, t…

Quasilinear differential constraints for parabolic systems of Jordan-block type
Alessandra Rizzo, Pierandrea Vergallo
https://arxiv.org/abs/2404.10101 http…

Quasilinear differential constraints for parabolic systems of Jordan-block type
We prove that linear degeneracy is a necessary conditions for systems in Jordan-block form to admit a compatible quasilinear differential constraint. Such condition is also sufficient for 2x2 systems and turns out to be equivalent to possess the Hamiltonian property. Some explicit solutions of parabolic systems are herein given: two principal hierarchies arising from the associativity theory and the delta-functional reduction of the El's equation in the hard rod case are integrated.

This https://arxiv.org/abs/2312.01977 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Cosmological constraints on early dark energy from the full shape analysis of eBOSS DR16
We evaluate the effectiveness of Early Dark Energy (EDE) in addressing the Hubble tension using data from the completed eBOSS survey, focusing on luminous red galaxies (LRGs), quasars (QSOs), and emission line galaxies (ELGs). We perform cosmological parameter measurements based on full shape analysis of the power spectrum of all three tracers. We conduct this full shape analysis with the effective field theory of large-scale structure (EFTofLSS). EDE is known to strongly suffer from volume pro…

A Post-Newtonian Analysis of Regularized 4D-EGB Theory: Complete Set of PPN Parameters and Observational Constraints
J\'unior D. Toniato, Mart\'in G. Richarte
https://arxiv.org/abs/2402.13951

A Post-Newtonian Analysis of Regularized 4D-EGB Theory: Complete Set of PPN Parameters and Observational Constraints
We performed a post-Newtonian analysis of the regularized four-dimensional Einstein-Gauss-Bonnet gravitational theory (4D-EGB). The resulting metric differs from the classical parametrized post-Newtonian (PPN) formalism in that a new gravitational potential arises from the integration of the approximate field equations. We also investigated the conserved quantities and equations of motion for massive bodies and light rays to a certain degree. By computing the predicted periastron advance rate i…

Constraints on Symmetry Preserving Gapped Phases from Coupling Constant Anomalies
T. Daniel Brennan
https://arxiv.org/abs/2404.11660 https://

Constraints on Symmetry Preserving Gapped Phases from Coupling Constant Anomalies
In this note, we will characterize constraints on the possible IR phases of a given QFT by anomalies in the space of coupling constants. We will give conditions under which a coupling constant anomaly cannot be matched by a continuous family of symmetry preserving gapped phases, in which case the theory is either gapless, or exhibits spontaneous symmetry breaking or a phase transition. We additionally demonstrate examples of theories with coupling constant anomalies which can be matched by a fa…

First combined tuning on transverse kinematic imbalance data with and without pion production constraints
Weijun Li (GENIE Collaboration), Marco Roda (GENIE Collaboration), Julia Tena-Vidal (GENIE Collaboration), Costas Andreopoulos (GENIE Collaboration), Xianguo Lu (GENIE Collaboration), Adi Ashkenazi (GENIE Collaboration), Joshua Barrow (GENIE Collaboration), Steven Dytman (GENIE Collaboration), Hugh Gallagher (GENIE Collaboration), Alfonso Andres Garcia Soto (GENIE Collaboration), S…

First combined tuning on transverse kinematic imbalance data with and without pion production constraints
We present the first global tuning, using GENIE, of four transverse kinematic imbalance measurements of neutrino-hydrocarbon scattering, both with and without pion final states, from the T2K and MINERvA experiments. As a proof of concept, we have simultaneously tuned the initial state and final-state interaction models (SF-LFG and hA, respectively), producing a new effective theory that more accurately describes the data.

This https://arxiv.org/abs/2402.07362 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hep…

Exploring Composite Dark Matter with an SU(4) gauge theory with 1 fermion flavor
Several SU(N) gauge theories have been explored as candidates for producing stable dark matter particles that can explain their relative abundance, while also evading current constraints from direct, indirect and collider searches. In this talk, I will present the confinement and spectral properties of a new model we name "Hyper Stealth Dark Matter", which involves an SU(4) gauge theory with 1 quark flavor. The lightest baryon in this theory can be a potential dark matter candidate as it is pro…

This https://arxiv.org/abs/2310.04167 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qu…

Making sense of relativistic Wigner friend scenarios: a problem for unitary accounts of quantum measurements ?
Wigner-friend scenarios -- in which external agents describe a closed laboratory containing a friend making a measurement -- highlight the difficulties inherent to quantum theory when accounting for measurements. In non-relativistic scenarios, the difficulty is to accommodate unitary evolution for a closed system with a definite outcome obtained by the friend. In relativistic scenarios the tensions between quantum theory and relativity induce additional constraints. A generic property of relati…

Linear shrinkage for optimization in high dimensions
Naqi Huang, Nestor Parolya, Thereisa van Essen
https://arxiv.org/abs/2402.18666 https://

Linear shrinkage for optimization in high dimensions
In large-scale, data-driven applications, parameters are often only known approximately due to noise and limited data samples. In this paper, we focus on high-dimensional optimization problems with linear constraints under uncertain conditions. To find high quality solutions for which the violation of the true constraints is limited, we develop a linear shrinkage method that blends random matrix theory and robust optimization principles. It aims to minimize the Frobenius distance between the es…

This https://arxiv.org/abs/2307.13954 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Semiclassical analysis of the bifundamental QCD on $\mathbb{R}^2\times T^2$ with 't Hooft flux
We study the phase structure of bifundamental quantum chromodynamics (QCD(BF)), which is the $4$-dimensional $SU(N) \times SU(N)$ gauge theory coupled with the bifundamental fermion. Firstly, we refine constraints on its phase diagram from 't Hooft anomalies and global inconsistencies, and we find more severe constraints than those in previous literature about QCD(BF). Secondly, we employ the recently-proposed semiclassical approach for confining vacua to investigate this model concretely, and …

This https://arxiv.org/abs/2401.11591 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

Primary constraints in general teleparallel quadratic gravity
The primary constraints for general teleparallel quadratic gravity are presented. They provide a basic classification of teleparallel theories from the perspective of the full nonlinear theory and represent the first step towards a full-fledged Hamiltonian analysis. The results are consistent with the limit of metric and symmetric teleparallel quadratic gravity. In the latter case we also present novel results, since symmetric teleparallel theories have only been partially studied so far. Apart…

Improved Constraints on the Variation of the Weak Scale from Big Bang Nucleosynthesis
Helen Meyer, Ulf-G. Mei{\ss}ner
https://arxiv.org/abs/2403.09325 http…

Improved Constraints on the Variation of the Weak Scale from Big Bang Nucleosynthesis
We analyze the recent EMPRESS data on the $^4$He abundance in Big Bang nucleosynthesis as a function of the Higgs vacuum expectation value $v$ and compare our calculation to the recently published work of Burns et al.~[1]. The EMPRESS result for the $^4$He abundance can be explained within $2σ$ by $0.03 \leq δv / v \leq 0.07$. However, as first noted in~[1], a Higgs VEV in this range would worsen the discrepancy between theory and experiment for the deuterium abundance significantly.

This https://arxiv.org/abs/2310.08128 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

Quintessence in the Weyl-Gauss-Bonnet model
Quintessence models have been widely examined in the context of scalar-Gauss-Bonnet gravity, a subclass of Horndeski's theory, and were proposed as viable candidates for Dark Energy. However, the relatively recent observational constraints on the speed of gravitational waves $c_{\textrm{GW}}$ have resulted in many of those models being ruled out because they predict $c_{\textrm{GW}} \neq c$ generally. While these were formulated in the metric formalism of gravity, we put forward a new quintesse…

This https://arxiv.org/abs/2312.07652 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Multiparticle Factorization and the Rigidity of String Theory
Is string theory uniquely determined by self-consistency? Causality and unitarity seemingly permit a multitude of putative deformations, at least at the level of two-to-two scattering. Motivated by this question, we initiate a systematic exploration of the constraints on scattering from higher-point factorization, which imposes extraordinarily restrictive sum rules on the residues and spectra defined by a given amplitude. These bounds handily exclude several proposed deformations of the string:…

This https://arxiv.org/abs/2312.07652 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Multiparticle Factorization and the Rigidity of String Theory
Is string theory uniquely determined by self-consistency? Causality and unitarity seemingly permit a multitude of putative deformations, at least at the level of two-to-two scattering. Motivated by this question, we initiate a systematic exploration of the constraints on scattering from higher-point factorization, which imposes extraordinarily restrictive sum rules on the residues and spectra defined by a given amplitude. These bounds handily exclude several proposed deformations of the string:…

This https://arxiv.org/abs/2312.07173 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

Dynamical analysis of coupled curvature-matter scenario in viable $f(R)$ dark energy models at de Sitter phase
We explore the interaction between dark matter and curvature-driven dark energy within viable $f(R)$ gravity models, employing the phase-space analysis approach of linear stability theory. By incorporating an interacting term, denoted as $\mathcal{Q}=αH \tildeρ_{\rm m}\left(\frac{κ^2 }{3H^2}ρ_{\rm curv} + 1 \right)$, into the continuity equations of both sectors, we examine dynamics of two $f(R)$ gravity models that adhere to local gravity constraints and fulfill cosmological viability crit…

This https://arxiv.org/abs/2212.05248 has been replaced.
link: https://scholar.google.com/scholar?q=a

Stochastic Linear-quadratic Control Problems with Affine Constraints
This paper investigates the stochastic linear-quadratic control problems with affine constraints, in which both equality and inequality constraints are involved. With the help of the Pontryagin maximum principle and Lagrangian duality theory, the dual problem of original problem is established and the state feedback form of the solution to the optimal control problem is obtained. Under the Slater condition, the equivalence is proved between the solutions to the original problem and the ones of …

Modeling nonlinear scales with COLA: preparing for LSST-Y1
Jonathan Gordon, Bernardo F. de Aguiar, Jo\~ao Rebou\c{c}as, Guilherme Brando, Felipe Falciano, Vivian Miranda, Kazuya Koyama, Hans A. Winther
https://arxiv.org/abs/2404.12344

Modeling nonlinear scales with COLA: preparing for LSST-Y1
Year 1 results of the Legacy Survey of Space and Time (LSST) will provide tighter constraints on small-scale cosmology, beyond the validity of linear perturbation theory. This heightens the demand for a computationally affordable prescription that can accurately capture nonlinearities in beyond-$Λ$CDM models. The COmoving Lagrangian Acceleration (COLA) method, a cost-effective \textit{N}-body technique, has been proposed as a viable alternative to high-resolution \textit{N}-body simulations fo…

This https://arxiv.org/abs/2401.00792 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Probing Grand Unification with Quantum Sensors
We discuss how grand unification can be probed with experiments at low energies using quantum sensors. Specifically, we show that scalar multiplets coupled to the gauge sector of a grand unified theory provide a mechanism for a time-varying unified coupling which has low-energy consequences which can be probed with quantum sensors. We then assume that the multiplets represent ultra light dark matter. Constraints on ultra light dark matter couplings to regular matter are extracted using atomic c…

The Nature of Dark Energy and Constraints on Its Hypothetical Constituents from Force Measurements
Galina L. Klimchitskaya, Vladimir M. Mostepanenko
https://arxiv.org/abs/2403.05988

The Nature of Dark Energy and Constraints on Its Hypothetical Constituents from Force Measurements
This review considers the theoretical approaches to the understanding of dark energy which comprises approximately 68\% of the energy of our Universe and explains an acceleration in its expansion. Following a discussion of the main approach based on Einstein's equations with the cosmological term, the explanations of dark energy using the concept of some kind of scalar field are elucidated. These include the concept of a quintessence and modifications of the general theory of relativity by mean…

Constraints on Metastable Dark Energy Decaying into Dark Matter
J. S. T. de Souza, G. S. Vicente, L. L. Graef
https://arxiv.org/abs/2403.04970 https://

Constraints on Metastable Dark Energy Decaying into Dark Matter
We revisit the proposal that an energy transfer from dark energy into dark matter can be described in field theory by a first order phase transition. We analyze the model proposed in Ref. Abdalla et al. (2013), using updated constraints on the decay time of a metastable dark energy from the work of Ref. Shafieloo et al. (2018). The results of our analysis show no prospects for potentially observable signals that could distinguish this scenario. We also show that such model would not drive a com…

Linear instability of hairy black holes in Horndeski theory
Chao Zhang, Tao Zhu
https://arxiv.org/abs/2404.10456 https://arxiv.org/pd…

Linear instability of hairy black holes in Horndeski theory
The Horndeski theory gives the most general model of scalar-tensor theories. It draws a lot of attentions in recent years on its black holes, celestial dynamics, stability analysis, etc. It is important to notice that, for certain subclasses of Horndeski models, one can obtain analytic solutions to the background fields. This provides us with a good opportunity to investigate the corresponding stability problems in details. Specially, we may find out the constraints to the model or theory, unde…

This https://arxiv.org/abs/2309.15498 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

A Control Theoretical Approach to Online Constrained Optimization
In this paper we focus on the solution of online problems with time-varying, linear equality and inequality constraints. Our approach is to design a novel online algorithm by leveraging the tools of control theory. In particular, for the case of equality constraints only, using robust control we design an online algorithm with asymptotic convergence to the optimal trajectory, differently from the alternatives that achieve non-zero tracking error. When also inequality constraints are present, we…

This https://arxiv.org/abs/2401.06818 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

A bootstrap study of minimal model deformations
For QFTs in AdS the boundary correlation functions remain conformal even if the bulk theory has a scale. This allows one to constrain RG flows with numerical conformal bootstrap methods. We apply this idea to flows between two-dimensional CFTs, focusing on deformations of the tricritical and ordinary Ising model. We provide non-perturbative constraints for the boundary correlation functions of these flows and compare them with conformal perturbation theory in the vicinity of the fixed points. W…

This https://arxiv.org/abs/2304.05723 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Distributed Coverage Control of Constrained Constant-Speed Unicycle Multi-Agent Systems
This paper proposes a novel distributed coverage controller for a multi-agent system with constant-speed unicycle robots (CSUR). The work is motivated by the limitation of the conventional method that does not ensure the satisfaction of hard state- and input-dependent constraints and leads to feasibility issues for multi-CSUR systems. In this paper, we solve these problems by designing a novel coverage cost function and a saturated gradient-search-based control law. Invariant set theory and Lya…

This https://arxiv.org/abs/2309.15498 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

A Control Theoretical Approach to Online Constrained Optimization
In this paper we focus on the solution of online problems with time-varying, linear equality and inequality constraints. Our approach is to design a novel online algorithm by leveraging the tools of control theory. In particular, for the case of equality constraints only, using robust control we design an online algorithm with asymptotic convergence to the optimal trajectory, differently from the alternatives that achieve non-zero tracking error. When also inequality constraints are present, we…

Towards quantum gravity with neural networks: Solving the quantum Hamilton constraint of U(1) BF theory
Hanno Sahlmann, Waleed Sherif
https://arxiv.org/abs/2402.10622

Towards quantum gravity with neural networks: Solving the quantum Hamilton constraint of U(1) BF theory
In the canonical approach of loop quantum gravity, arguably the most important outstanding problem is finding and interpreting solutions to the Hamiltonian constraint. In this work, we demonstrate that methods of machine learning are in principle applicable to this problem. We consider U(1) BF theory in 3 dimensions, quantized with loop quantum gravity methods. In particular, we formulate a master constraint corresponding to Hamilton and Gauss constraints using loop quantum gravity methods. To …

Compton scattering from superstrings
Thales Azevedo, Daniel E. A. Matamoros, Gabriel Menezes
https://arxiv.org/abs/2403.08899 https://

Compton scattering from superstrings
We propose a candidate Compton amplitude which is valid for any (integer) quantum spin and free from any spurious poles. We consider the cases of electromagnetism and gravity. We obtain such amplitudes by calculating the corresponding ones from superstring theory involving states on the leading Regge trajectory. To extract the associated field-theory amplitudes a few considerations in the form of simple physical constraints are required, such as: Soft momentum transfer, compactification of pola…

Probing Weyl-type $f(Q, T)$ gravity: Cosmological implications and constraints
Alnadhief H. A. Alfedeel, M. Koussour, N. Myrzakulov
https://arxiv.org/abs/2403.09916

Probing Weyl-type $f(Q, T)$ gravity: Cosmological implications and constraints
In this paper, we investigate the cosmological implications and constraints of Weyl-type $f(Q, T)$ gravity. This theory introduces a coupling between the non-metricity $Q$ and the trace $T$ of the energy-momentum tensor, using the principles of proper Weyl geometry. In this geometry, the scalar non-metricity $Q$, which characterizes the deviations from Riemannian geometry, is expressed in its standard Weyl form $\nabla _{μ}g_{αβ}=-w_{μ}g_{αβ}$ and is determined by a vector field $w_{μ}$.…

Probing Weyl-type $f(Q, T)$ gravity: Cosmological implications and constraints
Alnadhief H. A. Alfedeel, M. Koussour, N. Myrzakulov
https://arxiv.org/abs/2403.09916

Probing Weyl-type $f(Q, T)$ gravity: Cosmological implications and constraints
In this paper, we investigate the cosmological implications and constraints of Weyl-type $f(Q, T)$ gravity. This theory introduces a coupling between the non-metricity $Q$ and the trace $T$ of the energy-momentum tensor, using the principles of proper Weyl geometry. In this geometry, the scalar non-metricity $Q$, which characterizes the deviations from Riemannian geometry, is expressed in its standard Weyl form $\nabla _{μ}g_{αβ}=-w_{μ}g_{αβ}$ and is determined by a vector field $w_{μ}$.…

Constraints on Quasinormal modes from Black Hole Shadows in regular non-minimal Einstein Yang-Mills Gravity
Dhruba Jyoti Gogoi, Supakchai Ponglertsakul
https://arxiv.org/abs/2402.06186

Constraints on Quasinormal modes from Black Hole Shadows in regular non-minimal Einstein Yang-Mills Gravity
This work deals with the scalar quasinormal modes using higher order WKB method and black hole shadow in non-minimal Einstein Yang-Mills theory. To validate the results of quasinormal modes, time domain profiles are also investigated. We found that with an increase in the magnetic charge of the black hole, the ring-down gravitational wave increases non-linearly and damping rate decreases non-linearly. The presence of magnetic charge also results in a decrease in the black hole shadow non-linear…

This https://arxiv.org/abs/2312.07017 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

Constraints on Brans-Dicke gravity from neutron star-black hole merger events using higher harmonics
The Brans-Dicke (BD) theory is one of the simplest scalar-tensor theories, which has potential relations with dark matter, dark energy, inflation, and primordial nucleosynthesis. The strongest constraint on the BD coupling constant is provided by the Shapiro time delay measurement in the solar system by Cassini. Constraints from gravitational wave (GW) events are subject to asymmetric binaries. The third Gravitational-Wave Transient Catalog (GWTC) reports a neutron star-black hole (NSBH) merger…

Parameter Constraints on Traversable Wormholes within Beyond Horndeski Theories through Quasi-Periodic Oscillations
Farukh Abdulkhamidov, Petya Nedkova, Javlon Rayibaev, Jutta Kunz, Bobomurat Ahmedov
https://arxiv.org/abs/2403.08356

Parameter Constraints on Traversable Wormholes within Beyond Horndeski Theories through Quasi-Periodic Oscillations
{\it Hunting} compact astrophysical objects such as black holes and wormholes, as well as testing gravity theories, are important issues in relativistic astrophysics. In this sense, theoretical and observational studies of quasiperiodic oscillations (QPOs) observed in (micro)quasars become helpful in exploring their central object, which can be a black hole or a wormhole. In the present work, we study the throat properties of traversable wormholes beyond Horndeski theory. Also, we investigate t…