Tootfinder

Sources: Uber is in talks with Travis Kalanick to help fund his acquisition of Pony.ai's US arm; Pony.ai has permits to operate robo taxis in the US and China (Mike Isaac/New York Times)

Uber in Talks With Travis Kalanick to Fund Self-Driving Car Deal
The ride-hailing company is in talks to help Mr. Kalanick, who was forced out in 2017, purchase an autonomous vehicles start-up as robot taxi service Waymo gains momentum.

Radiated Angular Momentum from Spinning Black Hole Scattering Trajectories
Gustav Mogull, Jan Plefka, Kathrin Stoldt
https://arxiv.org/abs/2506.20643 https…

Radiated Angular Momentum from Spinning Black Hole Scattering Trajectories
Using the worldline quantum field theory approach we derive solutions to the equations of motion for spinning massive bodies up to quadratic order in spins. At leading post-Minkowskian (PM) order these trajectories are obtained in the time domain, and at sub-leading order in the frequency domain. Our approach incorporates diagrammatic techniques and modern Feynman integration technologies, and includes a new family of loop integrals different to those seen in asymptotic PM calculations. Our res…

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Angular-momentum-selective nanofocusing with Weyl semimetals
Marco Peluso, Alessandro De Martino, Reinhold Egger, Francesco Buccheri
https://arxiv.org/abs/2506.18503

Angular-momentum-selective nanofocusing with Weyl semimetals
We investigate the theory of surface plasmon polaritons on a magnetic Weyl semimetal conical tip. We show that the axion term in the effective electrodynamics modifies the surface plasmon polariton dispersion relation and allows all modes with a given sign of the orbital angular momentum to be focused at the end of the tip. This is in contrast with normal metals, in which only one mode can reach the end. We discuss how this orbital angular momentum nanofocusing expands the potential of technolo…

MCEDA buys The Tuskegee News to prevent the Alabama city from becoming a news desert, in what seems to be a first for a US economic development agency (Sarah Clifton/Montgomery Advertiser)
https://www.

160-year-old Tuskegee newspaper to remain in business after purchase by Macon County
"It's about preserving the voice of a community and protecting our momentum and economic development."

Interior rotation modelling of the $\beta$ Cep pulsator HD 192575 including multiplet asymmetries
V. Vanlaer, D. M. Bowman, S. Burssens, S. Bharati Das, L. Bugnet, S. Mathis, C. Aerts
https://arxiv.org/abs/2506.19948

Interior rotation modelling of the $β$ Cep pulsator HD 192575 including multiplet asymmetries
Rotation plays an important role in stellar evolution. However, the mechanisms behind the transport of angular momentum in stars at various stages of their evolution are not well understood. To improve our understanding of these processes, it is necessary to measure and validate the internal rotation profiles of stars across different stages of evolution and mass regimes. Our aim is to constrain the internal rotation profile of the 12Msun $β$ Cep pulsator HD 192575 from the observed pulsationa…

Observation of laser plasma accelerated electrons with transverse momentum spread below the thermal level
T. L. Steyn, A. Panchal, O. Vasilovici, S. Sch\"obel, P. Ufer, F. M. Herrmann, Y. -Y. Chang, I. Moulanier, M. Masckala, O. Khomyshyn, C. Ballage, M. LaBerge, F. Massimo, S. Dobosz Dufr\'enoy, U. Schramm, A. Irman, B. Cros
https://…

Observation of laser plasma accelerated electrons with transverse momentum spread below the thermal level
Achieving high-quality electron beams from laser-plasma accelerators critically relies on density tailoring to control electron dynamics during injection, acceleration, and extraction. We report on the experimental observation of electron beam acceleration and 3D shaping, in transverse momentum and longitudinal phase space, controlled by plasma density tailoring in a gas cell. It leads to relativistic electron beams with a transverse momentum spread of 0.2 mec, below the thermal level imprinted…

Harnessing Higgs Kinematics for HEFT Constraints
Christoph Englert, Tom Ingebretsen Carlson, J\"orgen Sj\"olin, Michael Spannowsky
https://arxiv.org/abs/2506.19401

Harnessing Higgs Kinematics for HEFT Constraints
We present a momentum-dependent reweighting strategy to extend current LHC di-Higgs analyses within the $κ$-framework and SMEFT into the bosonic sector of the Higgs Effective Field Theory (HEFT). Unlike SMEFT, where symmetry constraints tightly correlate multi-Higgs processes, HEFT allows for a broader range of momentum-dependent deviations that can substantially impact di-Higgs kinematics and offer a powerful probe of non-linear Higgs dynamics. We generalise the interpretation of existing exp…

Adding equatorial-asymmetric effects for spin-precessing binaries into the SEOBNRv5PHM waveform model
H\'ector Estell\'es, Alessandra Buonanno, Raffi Enficiaud, Cheng Foo, Lorenzo Pompili
https://arxiv.org/abs/2506.19911

Adding equatorial-asymmetric effects for spin-precessing binaries into the SEOBNRv5PHM waveform model
Gravitational waves from spin-precessing binaries exhibit equatorial asymmetries absent in non-precessing systems, leading to net linear momentum emission and contributing to the remnant's recoil. This effect, recently incorporated into only a few waveform models, is crucial for accurate recoil predictions and improved parameter estimation. We present an upgrade to the SEOBNRv5PHM model -- SEOBNRv5PHM_w/asym -- which includes equatorial asymmetric contributions to the l=m<=4 waveform modes in t…

Programmable spatiotemporal OAM optical toroidal beams with completely tunable properties
Andrew V. Komonen, Nicolas K. Fontaine, Martin Pl\"oschner, Marcos Maestre Morote, David T. Neilson, Joel Carpenter, Mickael Mounaix
https://arxiv.org/abs/2506.20365

Programmable spatiotemporal OAM optical toroidal beams with completely tunable properties
Spatiotemporal toroidal orbital angular momentum (OAM) beams are a developing class of spatiotemporal beams which have key applications within quantum physics, metrology, imaging and optical manipulation. However, the full realization of these applications require complete configurability within tunable temporal duration, 3D geometric structure and OAM charge of these beams along with amplitude, phase and polarization control. In this paper, we demonstrate complete configurability of programmab…

Lattice QCD Benchmark of Proton Helicity and Flavor-Dependent Unpolarized TMDPDFs at Physical Quark Masses
Dennis Bollweg, Xiang Gao, Swagato Mukherjee, Yong Zhao
https://arxiv.org/abs/2505.18430

Lattice QCD Benchmark of Proton Helicity and Flavor-Dependent Unpolarized TMDPDFs at Physical Quark Masses
We present the first lattice QCD calculations of the isovector helicity transverse momentum-dependent parton distribution function (TMDPDF) and the flavor-dependent unpolarized TMDPDFs for up and down quarks in the proton. Our computations utilize domain-wall fermion discretization with physical quark masses. Employing Coulomb-gauge-fixed bilocal quark correlation functions within the large-momentum effective theory framework, we access nonperturbative transverse quark separations $b_T$ up to a…

Study of $p_\mathrm{T}$-differential radial flow in blast-wave model
Swati Saha, Ranbir Singh, Bedangadas Mohanty
https://arxiv.org/abs/2505.19697 https://…

Study of $p_\mathrm{T}$-differential radial flow in blast-wave model
The transverse momentum-differential radial flow observable $v_0(p_\mathrm{T})$, recently proposed and measured by the ATLAS and ALICE collaborations, provides a novel tool to probe radial expansion dynamics in high-energy heavy-ion collisions. In this work, we conduct a detailed study of $v_0(p_\mathrm{T})$ using a blast-wave model that incorporates hydrodynamic-like expansion and thermal emission. We introduce event-by-event fluctuations in the transverse expansion velocity and kinetic freeze…

Pairing-induced Momentum-space Magnetism and Its Implication In Optical Anomalous Hall Effect In Chiral Superconductors
Bin Geng, Yang Gao, Qian Niu
https://arxiv.org/abs/2506.18005

Pairing-induced Momentum-space Magnetism and Its Implication In Optical Anomalous Hall Effect In Chiral Superconductors
The intrinsic mechanisms of the magneto-optical Kerr signal in chiral superconductors often involve multi-orbital degree of freedom. Here by considering a generic single-orbital and spinful Hamiltonian, we generalize the Onsager's relation to obtain the necessary conditions for the optical anomalous Hall effect. Using the down-folding method, we identify two types of effective momentum-space magnetism responsible for the optical anomalous Hall conductivity from non-unitary and unitary pairing p…

Anomalous Energy Injection in Turbulent Neutron Star Cores
Anirudh Sivakumar, Pankaj Kumar Mishra, Ahmad A. Hujeirat, Paulsamy Muruganandam
https://arxiv.org/abs/2506.20577

Anomalous Energy Injection in Turbulent Neutron Star Cores
Neutron star glitches -- sudden increases in rotational frequency -- are thought to result from angular momentum transfer via quantized vortices in the superfluid core. Using a two-dimensional rotating atomic Bose-Einstein condensate with phenomenological damping and a pinning potential to mimic the crust, we model the dynamics underlying these events. Our simulations reveal a transient Kolmogorov-like turbulent cascade ($k^{-5/3}$) that transitions to a Vinen-like scaling ($k^{-1}$). We identi…

It takes a special brand of political incompetence to see millions of people marching in opposition to the Republican president and not do anything to seize that momentum
but it appears dem leadership has decided to do just that
https://bsky.app/profile/ndrew.bsky.so

Supervised Similarity for Firm Linkages
Ryan Samson, Adrian Banner, Luca Candelori, Sebastien Cottrell, Tiziana Di Matteo, Paul Duchnowski, Vahagn Kirakosyan, Jose Marques, Kharen Musaelian, Stefano Pasquali, Ryan Stever, Dario Villani
https://arxiv.org/abs/2506.19856

Supervised Similarity for Firm Linkages
We introduce a novel proxy for firm linkages, Characteristic Vector Linkages (CVLs). We use this concept to estimate firm linkages, first through Euclidean similarity, and then by applying Quantum Cognition Machine Learning (QCML) to similarity learning. We demonstrate that both methods can be used to construct profitable momentum spillover trading strategies, but QCML similarity outperforms the simpler Euclidean similarity.

The angular momentum distribution of electrons in large atoms and its deviation from Madelung's rule
August Bjerg, S{\o}ren Fournais, Peter Hearnshaw, Jan Philip Solovej
https://arxiv.org/abs/2506.14227

The angular momentum distribution of electrons in large atoms and its deviation from Madelung's rule
We show that the angular momentum distribution of neutral atoms, in the sense of occupation numbers, follows the Thomas-Fermi angular momentum distribution in the limit of large atomic number. In particular, we show that the angular momentum distribution of large atoms deviates from the well-known Madelung rule.

Attitude Control of Solar Sail with Reflectivity Control Devices
Pierce S. Boughton, Yang Yang
https://arxiv.org/abs/2505.19865 https://

Attitude Control of Solar Sail with Reflectivity Control Devices
Solar sails offer a promising solution for fuel free propulsion, enabling novel mission profiles and deeper space exploration. While reaction wheels are standard for spacecraft attitude control, the large moment of inertia of solar sails often lead to frequent reaction wheel saturation, necessitating momentum offloading via additional control methods. Magnetorquers have historically been used for this purpose. This paper investigates Reflectivity Control Devices (RCDs) as an alternative method …

Just a couple hundred from crossing half a mill on the #SKG counter, hopefully if we can get Markiplier and Pewds to shout it out and get the momentum back up in time.

A closer look at the algebraic-operator correspondence between position and momentum space in Quantum Mechanics
Siddharth Dwivedi
https://arxiv.org/abs/2506.10950

A closer look at the algebraic-operator correspondence between position and momentum space in Quantum Mechanics
In this work we take a closer look at the algebraic-operator correspondence between the momentum ($k$) space and the position ($x$) space which gives us the form of the momentum operator in position space and vice versa in Quantum Mechanics. Taking the definition of the Fourier Transform as the starting point, we present a two parameter generalisation of the form of the momentum operator in position space followed by a generalisation of the momentum eigenfunctions and a few other results. It is…

A New Quantum Interferometric Protocol Using Spin-Dependent Displacements
Necati Celik, Songul Akbulut Ozen, Burhan Engin
https://arxiv.org/abs/2506.19544 …

A New Quantum Interferometric Protocol Using Spin-Dependent Displacements
We propose a quantum interferometric protocol that leverages spin-dependent spatial displacements to enable high-precision parameter estimation beyond classical limits. By inducing a unitary coupling between a particles spin degree of freedom and its momentum, the protocol generates entanglement between spin states and spatial positions, resulting in coherent spatial superpositions. Interferometric reconstruction of the resulting phase differences enables Heisenberg limited sensitivity for para…

A Charge Constraint in BMN
Yoav Zigdon
https://arxiv.org/abs/2506.19924 https://arxiv.org/pdf/2506.19924

A Charge Constraint in BMN
I derive a new charge constraint that ties the four angular momenta in a $\frac{1}{16}$-BPS sector of the Berenstein, Maldacena, and Nastase (BMN) supersymmetric $U(N)$ matrix quantum mechanics. The result is related to the charge constraint of the $U(N)$, $\mathcal{N}=4$ Super-Yang-Mills (SYM) conformal field theory by identifying three SYM charges with three BMN angular momenta generating $SO(6)$, two equal SYM angular momenta with a BMN angular momentum of $SO(3)$, and scaling $N^2$ by $3$. …

Complexity of normalized stochastic first-order methods with momentum under heavy-tailed noise
Chuan He, Zhaosong Lu, Defeng Sun, Zhanwang Deng
https://arxiv.org/abs/2506.11214

Complexity of normalized stochastic first-order methods with momentum under heavy-tailed noise
In this paper, we propose practical normalized stochastic first-order methods with Polyak momentum, multi-extrapolated momentum, and recursive momentum for solving unconstrained optimization problems. These methods employ dynamically updated algorithmic parameters and do not require explicit knowledge of problem-dependent quantities such as the Lipschitz constant or noise bound. We establish first-order oracle complexity results for finding approximate stochastic stationary points under heavy-t…

Replaced article(s) found for cs.LG. https://arxiv.org/list/cs.LG/new
[1/11]:
- On the fast convergence of minibatch heavy ball momentum
Raghu Bollapragada, Tyler Chen, Rachel Ward

Mono-Higgs signature in a singlet fermionic dark matter model
Yeong Gyun Kim, Kang Young Lee, Soo-hyeon Nam
https://arxiv.org/abs/2506.20113 https://

Mono-Higgs signature in a singlet fermionic dark matter model
We investigate the production of dark matter in association with a Higgs boson at the LHC within the singlet fermionic dark matter model. We focus on final states featuring a Higgs boson accompanied by large missing transverse momentum ($E^{\textrm{miss}}_{\textrm{T}}$), where the Higgs decays into a $b \bar{b}$ pair in the ATLAS analysis and into a $ZZ$ pair in the CMS analysis. Assuming light dark matter fermions with a mass of approximately 1 GeV, we find that the predicted production yields…

Peculiarities of quantum field theory in the presence of a wormhole
Mikhail N. Smolyakov
https://arxiv.org/abs/2506.21256 https://arx…

Peculiarities of quantum field theory in the presence of a wormhole
In this paper, quantum theory of a real massive scalar field in the background of a traversable wormhole is examined. The wormhole is supposed to connect two different universes, as a particular example the simplest Ellis wormhole is considered. It is shown that the resulting theory possesses a doubling of quantum states parameterized by the same value of asymptotic momentum, two different sets of such degenerate states are localized in different universes. This is a consequence of the topologi…

Path Integral Monte Carlo in the Angular Momentum Basis for a Chain of Planar Rotors
Est\^ev\~ao de Oliveira, Muhammad Shaeer Moeed, Pierre-Nicholas Roy
https://arxiv.org/abs/2506.14977

Path Integral Monte Carlo in the Angular Momentum Basis for a Chain of Planar Rotors
We introduce a Path Integral Monte Carlo (PIMC) approach that uses the angular momentum representation for the description of interacting rotor systems. Such a choice of representation allows the calculation of momentum properties without having to break the paths. The discrete nature of the momentum basis also allows the use of rejection-free Gibbs sampling techniques. To illustrate the method, we study the collective behavior of $N$ confined planar rotors with dipole-dipole interactions, a sy…

Probing jet-medium interactions via jet substructure observables in relativistic heavy-ion collisions
Xiang-Pan Duan, Tan Luo, Guo-Liang Ma
https://arxiv.org/abs/2506.19033

Probing jet-medium interactions via jet substructure observables in relativistic heavy-ion collisions
We present a comprehensive study of jet substructure observables in $pp$ and PbPb collisions at $\sqrt{s_{NN}} = 5.02$~TeV using a multi-phase transport model. To suppress background contamination, the constituent subtraction method is employed for both PbPb and smeared $pp$ events. The jet splitting momentum fraction ($z_g$) and the groomed jet mass to the ungroomed jet transverse momentum ($M_g / p_{T,\text{jet}}$) are reconstructed using the Soft Drop algorithm with two grooming parameter se…

Oracle stock jumped 24% this week, its best performance since 2001, and is up 29% in 2025, vs. Nasdaq's 1%, after the company reported cloud momentum (Jordan Novet/CNBC)
https://www.cnbc.com/2025/06/13/oracles-stock-on-pace…

Oracle's stock closes out best week since 2001 on cloud momentum
Oracle investors haven't had a week this good since April 2001, after the stock had collapsed in the dot-com crash.

Mailbag: How important is a good start to season? https://www.dallascowboys.com/news/mailbag-how-important-is-a-good-start-to-season

Replaced article(s) found for hep-ex. https://arxiv.org/list/hep-ex/new
[1/1]:
- The performance of missing transverse momentum reconstruction and its significance with the ATLAS...
ATLAS Collaboration

Orbital chiral lasing in twisted bilayer metasurfaces
Mingjin Wang (Laboratory of Solid State Optoelectronics Information Technology, Institute of Semiconductors, CAS, Beijing, China, Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China, College of Future Technology, University of Chinese Academy of Sciences, Beijing, China…

Orbital chiral lasing in twisted bilayer metasurfaces
Chirality is a fundamental concept in physics that underpins various phenomena in nonlinear optics, quantum physics, and topological photonics. Although the spin of a photon naturally brings chirality, orbital angular momentum can also become chirally active in the structures with a broken mirror symmetry. Here, we observe orbital chiral lasing from a twisted bilayer photonic structure leveraging its inherent structural chirality. Specifically, we design and fabricate a Moire-type optical struc…

High Seas Treaty gains momentum as 18 new countries pledge support
https://www.yahoo.com/news/high-seas-treaty-gains-momentum-021515585.html

Landau levels of a Dirac electron in graphene from non-uniform magnetic fields
Aritra Ghosh
https://arxiv.org/abs/2506.21529 https://…

Landau levels of a Dirac electron in graphene from non-uniform magnetic fields
The occurrence of Landau levels in quantum mechanics is well known when a charged particle is subjected to a uniform magnetic field. Considering the recent interest in the electronic properties of graphene which admits a dispersion relation which is linear in the momentum near the Dirac points, we revisit the problem of Landau levels in the spirit of the Dirac Hamiltonian and ask if there are certain non-uniform magnetic fields which also lead to a spectrum consisting of the Landau levels. The …

Orbital FFLO and layer-selective FFLO phases in trilayer NbSe$_2$
Michiya Chazono, Youichi Yanase
https://arxiv.org/abs/2506.19706 https://

Orbital FFLO and layer-selective FFLO phases in trilayer NbSe$_2$
Finite-momentum superconductivity has become an important research topic in condensed matter physics. In particular, the orbital Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, which is stabi lized in atomically thin films by the orbital effect of an external magnetic field, has been getting attention as a fascinating finite-momentum superconducting state recently. We study the phase diagram of the trilayer Ising superconductor NbSe$_2$ in the in-plane magnetic field, taking into ac count the or…

This https://arxiv.org/abs/2212.00763 has been replaced.
link: https://scholar.google.com/scholar?q=a

A Strong-QCD Regime Measurement of the Proton's Spin Structure
The theory of the strong force, Quantum Chromodynamics (QCD) remains one of the most important ways to understand the fundamental properties of ordinary matter. However, at low momentum transfer Q2, in the regime where the strong force becomes extremely strong, our understanding of QCD for ordinary nucleons becomes hazy. Several cutting edge theories such as Chiral Perturbation Theory and Lattice QCD have provided valuable predictions in this regime, but Lattice QCD has not yet extended predict…

Momentum
Great Australian Pods Podcast Directory: #GreatAusPods

Raiders Have Momentum With Pete Carroll https://www.si.com/nfl/raiders/pete-carroll-las-vegas-training-camp-tom-brady

Efficient calculation of thermodynamic properties of baryon-rich QCD matter from heavy-ion transport models
Lipei Du
https://arxiv.org/abs/2506.19766 https…

Efficient calculation of thermodynamic properties of baryon-rich QCD matter from heavy-ion transport models
This study presents the MATRICS framework (Modeling Aggregated Tensors for Relativistic Ion Collision Simulations) that implements modular workflows to enable parallel execution of particle generation, grid construction, and tensor calculations for heavy-ion collisions. It introduces an efficient approach to calculating the space-time distribution of the energy-momentum tensor and charge currents from discrete particles generated by transport models. By dynamically adjusting grid resolution bas…

Extracting the kinetic freeze-out properties of high energy pp collisions at the LHC with event shape classifiers
Jialin He, Xinye Peng, Zhongbao Yin, Liang Zheng
https://arxiv.org/abs/2506.20612

Extracting the kinetic freeze-out properties of high energy pp collisions at the LHC with event shape classifiers
Event shape measurements are crucial for understanding the underlying event and multiple-parton interactions (MPIs) in high energy proton proton (pp) collisions. In this paper, the Tsallis Blast-Wave model with independent non-extensive parameters for mesons and baryons, was applied to analyze transverse momentum spectra of charged pions, kaons, and protons in pp collision events at $\sqrt{s}=13$ TeV classified by event shape estimators relative transverse event activity, spherocity, and flatte…

Gravitational Wave Generation and Detection in Gravitational Quantum Field Theory
Yuan-Kun Gao, Da Huang, Yue-Liang Wu
https://arxiv.org/abs/2506.21225 htt…

Gravitational Wave Generation and Detection in Gravitational Quantum Field Theory
We investigate the production and detection of gravitational waves (GWs) within the framework of Gravitational Quantum Field Theory (GQFT). In this theory, GWs exhibit five propagating modes: one scalar, two vector, and two tensor modes. Unlike General Relativity, the gravitational field equations in GQFT involve both symmetric and antisymmetric tensors, governed by their respective energy-momentum tensors, both of which can act as sources for GW radiation. By solving the linearized gravitation…

Small Multifamily Investment Trends Report Q2 2025
Arbor Realty Trust - May 22, 2025
“Amid ongoing macroeconomic uncertainty, the small multifamily sector remains well-positioned to weather volatility and build on market momentum as the economy navigates stormy conditions.”

Small Multifamily Investment Trends Report Q2 2025 - Arbor Realty
Asset Valuations Edge Higher as Credit Conditions Tighten

Attosecond tunneling time measurements through momentum squeezing in strong field ionization
Jonathan Dubois, L\'eonardo Rico, Camille L\'ev\^eque, J\'er\'emie Caillat, Richard Ta\"ieb
https://arxiv.org/abs/2506.17483

Advanced Langevin thermostats: Properties, extensions to rheology, and a lean momentum-conserving approach
Shubham Agarwal, Sergey V. Sukhomlinov, Marc Honecker, Martin H. M\"user
https://arxiv.org/abs/2506.15579

Advanced Langevin thermostats: Properties, extensions to rheology, and a lean momentum-conserving approach
The Langevin equation accounts for unresolved bath degrees of freedom driving the system toward the bath temperature. Because of this, numerical solutions of the Langevin equation have a long history. Here, we recapitulate, combine, and extend existing Langevin-equation based thermostats, scrutinize their properties and demonstrate their superiority over global kinetic-energy controls. Our work includes compact, asymptotic-analysis based derivations of stochastic thermostats, including the high…

Theory of infrared magneto-optical effects from chiral phonons in solids
Chiara Fiorazzo, Cheol-Hwan Park, Ivo Souza, Matteo Calandra
https://arxiv.org/abs/2506.11258

Theory of infrared magneto-optical effects from chiral phonons in solids
In crystals with broken time-reversal symmetry, zone-center phonons can acquire a finite angular momentum via velocity-dependent forces on the nuclei. Despite having the same order of magnitude as the electron spin angular momentum, the phonon angular momentum can be hard to detect because the frequency splitting is small. Here, by developing a theory of lattice magneto-optical effects in reflection and transmission, we show that infrared magnetic circular dichroism is a sensitive probe of zone…

The first phase of mass transfer in low-mass binaries: neither stable nor a common envelope
Gijs Nelemans, Holly Preece, Karel Temmink, James Munday, Onno Pols
https://arxiv.org/abs/2506.16832

The first phase of mass transfer in low-mass binaries: neither stable nor a common envelope
The masses of the white dwarfs in a binary carry information about previous mass-transfer phases. The core mass -- radius relation of low-mass giants gives the size of the progenitor of a helium white dwarf at the moment it last filled its Roche lobe. Previously, we used this information for a few observed systems to propose a new mass-transfer type, based on an angular momentum balance. Our aim is to investigate if stable mass transfer instead of the angular momentum prescription is consiste…

Fascinating technology. I always thought the impulse engine was just a clever piston doodad that transfers momentum from an artificial gravity pocket 😃
Impulse engine | Memory Alpha | #StarTrek
https://

Impulse engine
An impulse engine or impulse drive was a common propulsion system used on starships used to create impulse power in order to achieve impulse speeds. In Federation starships, the impulse drive was essentially an augmented fusion rocket, usually consisting of one or more fusion reactors, a driver coil assembly, and a vectored thrust nozzle to direct the plasma exhaust. The fusion reaction generated a highly energized plasma. This plasma, ("electro-plasma") could be employed for propulsion, or...

The Interacting Energy Bands of Magic Angle Twisted Bilayer Graphene Revealed by the Quantum Twisting Microscope
J. Xiao, A. Inbar, J. Birkbeck, N. Gershon, Y. Zamir, T. Taniguchi, K. Watanabe, E. Berg, S. Ilani
https://arxiv.org/abs/2506.20738

The Interacting Energy Bands of Magic Angle Twisted Bilayer Graphene Revealed by the Quantum Twisting Microscope
Electron interactions in quantum materials fundamentally shape their energy bands and, with them, the material's most intriguing quantum phases. Magic angle twisted bilayer graphene (MATBG) has emerged as a model system, where flat bands give rise to a variety of such phases, yet the precise nature of these bands has remained elusive due to the lack of high-resolution momentum space probes. Here, we use the quantum twisting microscope (QTM) to directly image the interacting energy bands of MATB…

Non-coalescence and in-plane momentum generation in sessile droplet clusters
Gopal Chandra Pal, Cheuk Wing Edmond Lam, Chander Shekhar Sharma
https://arxiv.org/abs/2506.13942

Non-coalescence and in-plane momentum generation in sessile droplet clusters
Intuitively, droplets in proximity merge when brought into contact. However, under certain conditions, they may not coalesce due to the entrapment of an interstitial gas film. Droplet non-coalescence has so far been observed in various scenarios, such as during interactions between droplets moving with relative bulk velocity, droplets with opposite charges and size differences, and Leidenfrost droplets due to continuous vapor generation. Although non-coalescence has been reported for droplets o…

Momentum Multi-Marginal Schr\"odinger Bridge Matching
Panagiotis Theodoropoulos, Augustinos D. Saravanos, Evangelos A. Theodorou, Guan-Horng Liu
https://arxiv.org/abs/2506.10168

Momentum Multi-Marginal Schrödinger Bridge Matching
Understanding complex systems by inferring trajectories from sparse sample snapshots is a fundamental challenge in a wide range of domains, e.g., single-cell biology, meteorology, and economics. Despite advancements in Bridge and Flow matching frameworks, current methodologies rely on pairwise interpolation between adjacent snapshots. This hinders their ability to capture long-range temporal dependencies and potentially affects the coherence of the inferred trajectories. To address these issues…

Theoretical study on ambient pressure superconductivity in La$_3$Ni$_2$O$_7$ thin films : structural analysis, model construction, and robustness of $s\pm$-wave pairing
Kensei Ushio, Shu Kamiyama, Yuto Hoshi, Ryota Mizuno, Masayuki Ochi, Kazuhiko Kuroki, Hirofumi Sakakibara
https://arxiv.org/abs/2506.20497

Theoretical study on ambient pressure superconductivity in La$_3$Ni$_2$O$_7$ thin films : structural analysis, model construction, and robustness of $s\pm$-wave pairing
We theoretically study ambient pressure superconductivity in thin films of La$_3$Ni$_2$O$_7$. We construct model Hamiltonians adopting the crystal structure theoretically determined by fixing the in-plane lattice constant to those substrates examined in the experiment. We also construct a model based on the experimentally determined lattice structure. To the models obtained, we apply the fluctuation exchange approximation, which takes into account the full momentum and frequency dependencies of…

Convergence of Momentum-Based Optimization Algorithms with Time-Varying Parameters
Mathukumalli Vidyasagar
https://arxiv.org/abs/2506.11904 https://…

Convergence of Momentum-Based Optimization Algorithms with Time-Varying Parameters
In this paper, we present a unified algorithm for stochastic optimization that makes use of a "momentum" term; in other words, the stochastic gradient depends not only on the current true gradient of the objective function, but also on the true gradient at the previous iteration. Our formulation includes the Stochastic Heavy Ball (SHB) and the Stochastic Nesterov Accelerated Gradient (SNAG) algorithms as special cases. In addition, in our formulation, the momentum term is allowed to vary as a f…

Mailbag: How important is a good start to season? https://www.dallascowboys.com/news/mailbag-how-important-is-a-good-start-to-season

A solvable microscopic model for the propagation of light in a dielectric medium
Richard Dengler
https://arxiv.org/abs/2506.17415 https://

A solvable microscopic model for the propagation of light in a dielectric medium
This work examines a dielectric medium consisting of small, polarizable classical atoms arranged on a cubic lattice. Using a regularized variant of the discrete dipole approximation (DDA) method, we derive the solution for the propagation of light in this medium in the long wavelength limit. Under typical conditions, the atoms remain effectively stationary, but acquire momentum. The analytical solution is used to calculate the mechanical contribution to the the signal momentum from the electrom…

Enhanced randomized Douglas-Rachford method: Improved probabilities and adaptive momentum
Liqi Guo, Ruike Xiang, Deren Han, Jiaxin Xie
https://arxiv.org/abs/2506.10261

Enhanced randomized Douglas-Rachford method: Improved probabilities and adaptive momentum
Randomized iterative methods have gained recent interest in machine learning and signal processing for solving large-scale linear systems. One such example is the randomized Douglas-Rachford (RDR) method, which updates the iterate by reflecting it through two randomly selected hyperplanes and taking a convex combination with the current point. In this work, we enhance RDR by introducing improved sampling strategies and an adaptive heavy-ball momentum scheme. Specifically, we incorporate without…

Higher co-dimension de Sitter branes
Florian Niedermann, Antonio Padilla
https://arxiv.org/abs/2506.19515 https://arxiv.org/pdf/2506.…

Higher co-dimension de Sitter branes
We extend the arguments of Maldacena and Núñez to include higher co-dimension brane setups and derive a new no-go theorem. Specifically, we show that under reasonable assumptions on the energy-momentum conservation and the bulk curvature, co-dimension-two branes fail to support stable de Sitter solutions. For co-dimensions higher than two embedded in a compact internal space, we show that negative tension sources would be required. This result places strong constraints on the viability of hig…

Soft and semihard components of multiplicity distributions in the $k_T$ factorization approach
H. R. Martins-Fontes, F. S. Navarra
https://arxiv.org/abs/2506.17127

Soft and semihard components of multiplicity distributions in the $k_T$ factorization approach
Particle production in hadronic collisions can be studied in the low-momentum (soft) and high-momentum (hard) transfer regimes. While the latter can be well understood with in perturbative QCD the former contains non-perturbative effects which cannot be calculated from first principles. There is also an intermediate regime called semihard, in which the momentum transfer runs typically from $~1$ to $~10$ GeV. As the hadron-hadron collision energy increases, we expect to see a relative growth of …

Imprints of Different Types of Low-Angular-Momentum Accretion Flow Solutions in General Relativistic Hydrodynamic Simulations
Indu K. Dihingia, Akhil Uniyal, Yosuke Mizuno
https://arxiv.org/abs/2506.05750

Imprints of Different Types of Low-Angular-Momentum Accretion Flow Solutions in General Relativistic Hydrodynamic Simulations
Depending on the astrophysical source and its environment, the accretion flows can exhibit a variety of behaviors and characteristics in accordance with the type of solutions. We study low-angular-momentum accretion flows onto black holes using two-dimensional general relativistic hydrodynamic (GRHD) simulations to find imprints of different types of accretion solutions. Such flows, relevant to X-ray binaries and wind-fed low-luminosity active galactic nuclei, often lack sufficient angular mome…

Probing the pseudogap and beyond: examining single-particle properties of the hole- and electron-doped Hubbard model
Wen O. Wang, Edwin W. Huang, Brian Moritz, Thomas P. Devereaux
https://arxiv.org/abs/2506.15770

Probing the pseudogap and beyond: examining single-particle properties of the hole- and electron-doped Hubbard model
We compute high-resolution angle-resolved photoemission spectroscopy of the Hubbard model using the unbiased determinant quantum Monte Carlo algorithm, revealing an asymmetry between electron and hole doping. Electron doping exhibits more coherent quasiparticles and stronger antiferromagnetic correlations compared to hole doping. At low doping, a nodal-antinodal dichotomy on the Fermi surface is observed, similar to cuprate experiments. The dichotomy reflects the momentum dependence of the Mott…

A two-state solution is gaining momentum again for Israel and the Palestinians. Does it have a chance of success?
https://www.juancole.com/2025/06/solution-momentum-palestinians.html

The efficiency of mixed modes for angular momentum transport
Beatriz Bordad\'agua, Felix Ahlborn, Quentin Copp\'ee, Jo\~ao P. Marques, K\'evin Belkacem, Saskia Hekker
https://arxiv.org/abs/2506.13283

The efficiency of mixed modes for angular momentum transport
Core rotation rates of red-giant stars inferred from asteroseismic observations are substantially lower than predicted by current stellar models. This indicates the lack of an efficient angular momentum transport mechanism in radiative interiors. Mixed pressure-gravity modes are a promising candidate to extract angular momentum from the core of red giants. We focus on determining the effect of mixed modes on the rotation rates of stars evolving along the red giant branch (RGB). We developed a p…

Exceedingly large in-plane critical field of finite-momentum pairing state in bulk superlattices
Junfa Lin, Ziqiao Wang, Hongyi Yan, Xiaoping Ma, Zihan Cui, Yu Zhang, Yuxuan Lei, Jie Liu, Rao Li, Chuanying Xi, Zengwei Zhu, Huakun Zuo, Yanzhao Liu, Huaixin Yang, Tian-Long Xia, Haiwen Liu, Yi Liu, Jian Wang
https://arxiv.org/abs/2…

Exceedingly large in-plane critical field of finite-momentum pairing state in bulk superlattices
Magnetic flux profoundly influences the phase factor of charge particles, leading to exotic quantum phenomena. A recent example is that the orbital effect of magnetic field could induce finite-momentum pairing state in nanoflakes, which offers a new pathway to realize the spatially modulated superconductivity distinct from the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state induced by Zeeman effect. However, whether such intriguing state can exist in the bulk materials under extremely large magne…

MLorc: Momentum Low-rank Compression for Large Language Model Adaptation
Wei Shen, Yaxiang Zhang, Minhui Huang, Mengfan Xu, Jiawei Zhang, Cong Shen
https://arxiv.org/abs/2506.01897

MLorc: Momentum Low-rank Compression for Large Language Model Adaptation
With increasing size of large language models (LLMs), full-parameter fine-tuning imposes substantial memory demands. To alleviate this, we propose a novel memory-efficient training paradigm called Momentum Low-rank compression (MLorc). By directly compressing and reconstructing momentum rather than gradients, MLorc avoids imposing a fixed-rank constraint on weight update matrices and better preserves the training dynamics of full-parameter fine-tuning, in contrast to existing low-rank approache…

One-Loop Correction to the Higgs Mass
Kang-Sin Choi
https://arxiv.org/abs/2506.18667 https://arxiv.org/pdf/2506.18667

One-Loop Correction to the Higgs Mass
We present the complete one-loop corrected Higgs mass within the Standard Model. It is crucial to identify the observable mass as the renormalized one that depends on the external momentum. The correction is finite and dominated by the loops involving W bosons, Z boson and top quark. These contributions exhibit a power-law running with momentum, which may be verifiable at the Large Hadron Collider.

Cosmological Analysis of $f(R, \Sigma, T)$ Gravity with EoS Parameterization
S. H. Shekh, N. Myrzakulov, Anil Kumar Yadav, Anirudh Pradhan
https://arxiv.org/abs/2506.18953

Cosmological Analysis of $f(R, Σ, T)$ Gravity with EoS Parameterization
In this paper, we present a comprehensive cosmological analysis within the framework of $f(R, Σ, T)$ gravity, a modified theory that incorporates nonlinear matter-geometry coupling via the inclusion of both the trace of the energy-momentum tensor $T$ and the scalar $Σ= T_{μν}T^{μν}$. We consider a spatially flat Friedmann-Robertson-Walker (FRW) universe and introduce a linear parameterization for the equation of state (EoS) parameter based on the Chevallier-Polarski-Linder (CPL) form, whi…

Momentum-space Metric Tensor from Nonadiabatic Evolution of Bloch Electrons
Yafei Ren
https://arxiv.org/abs/2506.06439 https://arxiv.…

Momentum-space Metric Tensor from Nonadiabatic Evolution of Bloch Electrons
We reveal a fundamental geometric structure of momentum space arising from the nonadiabatic evolution of Bloch electrons. By extending semiclassical wave packet theory to incorporate nonadiabatic effects, we introduce a momentum-space metric tensor -- the nonadiabatic metric. This metric gives rise to two velocity corrections, dubbed geometric and geodesic velocities, providing a unified and intuitive framework for understanding nonlinear and nonadiabatic transport phenomena beyond Berry phase …

Rogue waves collision under incident momentum modulation in two-component Bose-Einstein condensates
Zhihao Zhang, Tiantian Li, Xiao-Dong Bai, Yunbo Zhang, Denglong Wang
https://arxiv.org/abs/2506.08420

Rogue waves collision under incident momentum modulation in two-component Bose-Einstein condensates
The collision dynamics of two first-order rogue waves (RWs) with opposite incident momentum in two-component Bose-Einstein condensates (BECs) is studied by solving the two-component one-dimensional Gross-Pitaevskii (GP) equation. It is demonstrated that the introduction of appropriate incident momentum successfully promotes the generation of second-order RWs in the case of relatively weaker interspecies interactions compared to intraspecific interactions. The range of incident momentum that can…

Finite-momentum superconductivity from chiral bands in twisted MoTe$_2$
Yinqi Chen, Cheng Xu, Yang Zhang, Constantin Schrade
https://arxiv.org/abs/2506.18886

Finite-momentum superconductivity from chiral bands in twisted MoTe$_2$
A recent experiment has reported unconventional superconductivity in twisted bilayer MoTe$_2$, emerging from a normal state that exhibits a finite anomalous Hall effect -- a signature of intrinsic chirality. Motivated by this discovery, we construct a continuum model for twisted MoTe$_2$ constrained by lattice symmetries from first-principles calculations that captures the moiré-induced inversion symmetry breaking even in the absence of a displacement field. Building on this model, we show tha…

Conical Intersections and Electronic Momentum As Viewed From Phase Space Electronic Structure Theory
Titouan Duston, Nadine Bradbury, Zhen Tao, Joseph E. Subotnik
https://arxiv.org/abs/2506.11963

Conical Intersections and Electronic Momentum As Viewed From Phase Space Electronic Structure Theory
We investigate the structure of a prototypical two-state conical intersection (BeH$_2$) using a phase space electronic Hamiltonian $\hat{H}_{PS}(\bR,\bP)$ that goes beyond the Born-Oppenheimer framework. By parameterizing the electronic Schr{ö}dinger equation by both nuclear position ($\bR$) and momentum ($\bP$), we solve for quantum electronic states in a moving frame that can break time reversal symmetry and, as a result, the branching plane of the conical intersection within a phase space f…

Fears of racial profiling rise as Border Patrol conducts ‘roving patrols,’ and detain U.S. citizens
video: “These guys, literally based off of skin color! My homie was born here!” The friend said Gavidia was being questioned “just because of the way he looks.”
U.S. Border Patrol Sector Chief Greg Bovino,
who oversaw raids that included picking people up at Home Depot
and stopping them on the highway,
has emerged as a key figure in L.A.
He stood alongside…

Fears of racial profiling rise as Border Patrol conducts 'roving patrols,' detains U.S. citizens
Border Patrol agents on 'roving patrol' arrest U.S. citizen on assault charges. Fear of widespread racial profiling gains momentum as Home Depots and car washes raided.

Energy and photon centroids of spatiotemporal light pulses and consequences for their intrinsic orbital angular momentum
Titouan Gadeyne, Thierry Ruchon
https://arxiv.org/abs/2506.13535

Energy and photon centroids of spatiotemporal light pulses and consequences for their intrinsic orbital angular momentum
An ongoing debate surrounding the intrinsic transverse orbital angular momentum (OAM) attributed to spatiotemporal optical vortex (STOV) light pulses has raised the energy and photon-density centroids as two alternative frameworks to define the center of a free electromagnetic wavepacket. We herein derive, within a single formalism, lowest-order expressions for the positions and velocities of both centroids, directly applicable to an arbitrary scalar, near-paraxial and quasi-monochromatic pulse…

Small Multifamily Investment Snapshot — June 2025
Arbor - June 10, 2025
“Once again, small multifamily demonstrated its resilience in the first quarter of 2025. Pricing stabilized, origination activity improved, and credit standards gained momentum toward pre-pandemic benchmarks.”

Small Multifamily Investment Snapshot — June 2025 - Arbor Realty
Amid ongoing macroeconomic uncertainty, the small multifamily sector remains well-positioned to weather volatility and build on market momentum as the economy navigates stormy conditions.

On the action for a charged particle moving in a magnetic field
Manoj K. Harbola
https://arxiv.org/abs/2506.16181 https://arxiv.org/p…

On the action for a charged particle moving in a magnetic field
Application of the Bohr-Wilson-Sommerfeld quantization condition to a charged particle in a uniform magnetic field requires knowledge of the canonical momentum of such a particle, which in turn requires students to know about the vector potential. The canonical momentum in this situation is conventionally obtained by introducing an appropriate additional term involving the corresponding vector potential in the Lagrangian. In this work, we take a different approach to this problem by analyzing i…

Assessing the accuracy of the GENIE event generator with electron scattering data: Reduced cross section and nuclear transparency
A. V. Butkevich, S. V. Luchuk
https://arxiv.org/abs/2506.19355

Assessing the accuracy of the GENIE event generator with electron scattering data: Reduced cross section and nuclear transparency
The reduced cross sections of the semi-exclusive $(l,l'p)$ lepton scattering process can be identified with distorted nuclear spectral functions. Irrespective of the type of interaction the distorted spectral function is determined mainly by intrinsic properties of the target and the ejected nucleon interaction with residual nucleus. Thus the reduced cross sections of the neutrino and electron scattering on nuclei as functions of nucleon missing momentum and energy are similar up to Coulomb cor…

Correlation between particle spectra and elliptic flow
Tribhuban Parida, Rupam Samanta, Jean-Yves Ollitrault
https://arxiv.org/abs/2506.18690 https://

Correlation between particle spectra and elliptic flow
We introduce a new observable to probe the collective nature of the radial expansion of the quark-gluon plasma. This observable, dubbed $v_{02}(p_T)$, represents the correlation of the spectrum with elliptic flow, in the same way as the recently measured $v_0(p_T)$ represents the correlation of the spectrum with the transverse momentum per particle. The advantage of $v_{02}(p_T)$ over $v_0(p_T)$ is that it is measured using a three-particle cumulant, as opposed to a pair correlation, which sign…

Topological Stars and scalar wave equation: Exact resummation of the renormalized angular momentum in the eikonal limit
Donato Bini, Giorgio Di Russo
https://arxiv.org/abs/2506.14442

Topological Stars and scalar wave equation: Exact resummation of the renormalized angular momentum in the eikonal limit
We show that for a Topological Star the renormalized angular momentum parameter, $ν$, appearing in the Mano-Suzuki-Takasugi-type or in the quantum-Seiberg-Witten-type approaches of the perturbation equations, has 1) a direct link with the geodesic radial action computed along the null orbits of the background and 2) admits an exact resummation in terms of hypergeometric functions, generalizing previous results valid in the Schwarzschild case, see Ref.[arXiv:2504.07862 [hep-th]].

Magnetic braking and dynamo evolution of $\beta$ Hydri
A. R. G. Santos, T. S. Metcalfe, O. Kochukhov, T. R. Ayres, R. Gafeira, T. L. Campante
https://arxiv.org/abs/2506.17049

Magnetic braking and dynamo evolution of $β$ Hydri
The evolution of magnetic braking and dynamo processes in subgiant stars is essential for understanding how these stars lose angular momentum. We investigate the magnetic braking and dynamo evolution of $β$ Hydri, a G-type subgiant, to test the hypothesis of weakened magnetic braking and the potential rejuvenation of large-scale magnetic fields. We analyze spectropolarimetric observations from HARPS (HARPSpol; polarimetric mode of High Accuracy Radial velocity Planet Searcher), and combine the…

3-dimensional plasmonic nanomotors driven by Optical Pulling Forces
Guillermo Serrera, Yoshito Y. Tanaka, Pablo Albella
https://arxiv.org/abs/2506.16811 ht…

3-dimensional plasmonic nanomotors driven by Optical Pulling Forces
Light-matter interactions generally involve momentum exchange between incident photons and the target object giving rise to optical forces and torques. While typically weak, they become significant at the nanoscale, driving intense research interest in the exploitation of photon recoil to drive micro- and nanostructures. While great progress has been attained in controlling transversal degrees of freedom, three-dimensional movement remains challenging, particularly due to the impractical realiz…

Theory Uncertainties in the Extraction of $\alpha_s$ from Drell-Yan at Small Transverse Momentum
Thomas Cridge, Giulia Marinelli, Frank J. Tackmann
https://arxiv.org/abs/2506.13874

Theory Uncertainties in the Extraction of $α_s$ from Drell-Yan at Small Transverse Momentum
We perform a detailed pseudodata study to estimate the expected theory uncertainty in the extraction of the strong coupling constant, $α_s(m_Z)$, from a fit to the measured Drell-Yan transverse momentum ($q_T$) spectrum at small $q_T \ll m_Z$. We consider two approaches to estimate the dominant perturbative uncertainties. We first discuss that the traditional approach based on varying unphysical scales is insufficient here because it cannot correctly account for bin-by-bin theory correlations …

Nuclear and neutron matter in the relativistic Brueckner-Hartree-Fock theory with next-to-leading order covariant chiral nuclear force
Wei-Jiang Zou, Yi-Long Yang, Jun-Xu Lu, Peng-Wei Zhao, Li-Sheng Geng, Jie Meng
https://arxiv.org/abs/2506.18519

Nuclear and neutron matter in the relativistic Brueckner-Hartree-Fock theory with next-to-leading order covariant chiral nuclear force
The symmetric nuclear matter and pure neutron matter are investigated by the relativistic Brueckner-Hartree-Fock (RBHF) theory with the covariant chiral nuclear forces up to the next-to-leading order~(NLO). A fitting scheme to ensure the naturalness of the low-energy constants is proposed, which plays a crucial role in the proper description of nuclear matter. With a momentum cutoff $Λ=590$ MeV, the empirical saturation energy and density, as well as the incompressibility coefficient at the sa…

The metric from energy-momentum non-conservation: Generalizing Noether and completing spectral geometry
Achim Kempf
https://arxiv.org/abs/2506.11186 https:…

The metric from energy-momentum non-conservation: Generalizing Noether and completing spectral geometry
We complete the program of spectral geometry, in the sense that we show that a manifold's shape, i.e., its metric, can be reconstructed from its resonant sound when tapped lightly, i.e., from its spectrum, -- if in addition we also record the resonances' mutual excitation pattern when the driving is strong enough to reach the nonlinear regime. Applied to spacetime, this finding yields a generalization of Noether's theorem: the specific pattern of energy-momentum non-conservation on a generic cu…

Optical spin-orbit interaction induced by magnetic textures
Martin Luttmann, Mauro Fanciulli, Pietro Carrara, Maurizio Sacchi, Thierry Ruchon
https://arxiv.org/abs/2506.15232

Optical spin-orbit interaction induced by magnetic textures
Contrary to the optical spin angular momentum (SAM), the role played by the orbital angular momentum (OAM) of light in magneto-optics remains largely unexplored. However, the SAM and OAM are known to be coupled when light interacts with non-homogeneous and non-isotropic materials. Here we predict that the OAM carried by each photon in a light beam is modified upon reflection on magnetic textures like skyrmions, and that the sign of this variation is governed by the SAM of the incident field. Ou…

This https://arxiv.org/abs/2505.05432 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Boundary Energy-Momentum Tensors for Asymptotically Flat Spacetimes
We consider 3D and 4D asymptotically flat spacetimes near future null infinity endowed with the most general allowed Carroll geometry. We define a boundary energy-momentum tensor by varying the on-shell action with respect to the Carroll metric data. This requires adding counterterms to the Einstein-Hilbert action. We show that, in 4D, the shear is on par with the Carroll metric data. Their combined response defines a boundary energy-momentum-news complex whose diffeomorphism Ward identity is e…

Saddle-point method for resummed form factors in QCD
Ugo Giuseppe Aglietti, Giancarlo Ferrera, Wan-Li Ju
https://arxiv.org/abs/2506.18707 https://

Saddle-point method for resummed form factors in QCD
We consider the form factor appearing in QCD resummation formalism for event shape distributions in the two-jet (or Sudakov) region. We present an analytic formula for the inverse transform of the form factor, namely from the conjugate moment space to the (physical) momentum space, based on the saddle-point method. The saddle-point itself is determined by means of an analytic recursion method as well as by standard numerical methods. The results we have found are in very good agreement with the…

Superfluid stiffness bounds in time-reversal symmetric superconductors
Yongxin Zeng, Andrew J. Millis
https://arxiv.org/abs/2506.18081 https://

Superfluid stiffness bounds in time-reversal symmetric superconductors
Quantum geometry has been shown to make an important contribution to the superfluid stiffness of superconductors, especially for flat-band systems such as moiré materials. In this work we use mean-field theory to derive an expression for the superfluid stiffness of time-reversal symmetric superconductors at zero temperature by computing the energy of the mean-field ground state as a function of pairing momentum. We show that the quantum geometric contribution to superfluid stiffness is a conse…

System size dependence of charged hadrons directed flow at $\sqrt{s_{NN}}$ = 200 GeV using a multi-phase transport model
Kishora Nayak, Vipul Bairathi
https://arxiv.org/abs/2506.17763

System size dependence of charged hadrons directed flow at $\sqrt{s_{NN}}$ = 200 GeV using a multi-phase transport model
The directed flow ($v_1$) of charged hadrons ($h^{\pm}$) in symmetric collision systems (O+O, Cu+Cu, Zr+Zr, Ru+Ru, Au+Au, and U+U) at $\sqrt{s_{\mathrm{NN}}} =$ 200 GeV using string-melting version of A Multiphase Transport (AMPT-SM) model is reported. The $v_1$ as a function of pseudo-rapidity ($η$) is obtained for transverse momentum ($p_{\mathrm{T}}$) ranges of 0.2-2.0 GeV/$c$ and 2.0-5.0 GeV/$c$. The dependence of $v_1$-slope ($dv_1/dη$) at mid-rapidity on $p_{\mathrm{T}}$ range, collisio…

Geometric spin Hall effect of spatiotemporal optical vortices
Chaokai Yang, Weifeng Ding, Zhaoying Wang
https://arxiv.org/abs/2506.15053 https://

Geometric spin Hall effect of spatiotemporal optical vortices
The geometric spin Hall effect of light (GSHEL), which is associated with nonzero transverse angular momentum, has been demonstrated to occur without the need for light-matter interaction and is characterized by a transverse shift. Recently, there has been a surge in research on spatiotemporal optical vortices (STOV) that carry pure transverse angular momentum. In this study, we examine the transverse shift of STOV in a tilted reference frame with respect to the optical axis. Through both theor…

Fully Self-Consistent Semiclassical Gravity
R. Muci\~no, E. Okon, D. Sudarsky, M. Wiedemann
https://arxiv.org/abs/2506.17149 https://…

Fully Self-Consistent Semiclassical Gravity
A theory of quantum gravity consists of a gravitational framework which, unlike general relativity, takes into account the quantum character of matter. In spite of impressive advances, no fully satisfactory, self-consistent and empirically viable theory with those characteristics has ever been constructed. A successful semiclassical gravity model, in which the classical Einstein tensor couples to the expectation value of the energy-momentum tensor of quantum matter fields, would, at the very le…

Constraining parameters of spinor field dark energy: An alternative to $\Lambda$CDM model under the spherically symmetric FLRW space-time
Bijan Saha, Mahendra Goray
https://arxiv.org/abs/2506.16323

Constraining parameters of spinor field dark energy: An alternative to $Λ$CDM model under the spherically symmetric FLRW space-time
This study constrains the cosmological parameters within the scope of a spherically symmetric FLRW cosmological model, the role of a nonlinear spinor field in the universe's evolution. To test this approach, we incorporate the recent Cosmic chronometers, Supernova, and Sloan Digital Sky Survey data. It is found that if spherical coordinates give the FLRW model, the energy-momentum tensor (EMT) of the spinor field possesses nontrivial non-diagonal components. These non-diagonal components of EMT…

Magnetically tunable singularity of Moire bound states in the continuum
Shuo Wang
https://arxiv.org/abs/2506.16828 https://arxiv.org/…

Magnetically tunable singularity of Moire bound states in the continuum
We investigate the band structure and the dynamics of topological singularities of magneto-optical Moiré bound states in the continuum (BICs), which originate from two overlapped conventional magneto-optical BIC gratings with mismatched periods. We show that breaking time-reversal symmetry by applying an external magnetic field in different directions can effectively manipulate the Moiré BICs' topological singularities, which exhibit a high Q factor throughout the momentum space.

Initial stage jet momentum broadening in tBLFQ formalism
Dana Avramescu, Carlos Lamas, Tuomas Lappi, Meijian Li, Carlos A. Salgado
https://arxiv.org/abs/2506.06206

Initial stage jet momentum broadening in tBLFQ formalism
We study the momentum broadening of a high-energy quark jet in the large density gluon medium created right after the collision of two ultrarelativistic heavy nuclei, the Glasma. Previous Glasma studies modeled the jet as a classical probe particle, for which position and momentum are simultaneously determined. In this work, we use the light-front QCD Hamiltonian formalism to treat the jet as a fully quantum state. We compute its real-time evolution while propagating through the Glasma classica…

Shaping Bulk Fermi Arcs in the Momentum Space of Photonic Crystal Slabs
Luigi Frau, Simone Zanotti, Lydie Ferrier, Dario Gerace, Hai Son Nguyen
https://arxiv.org/abs/2506.13698

Shaping Bulk Fermi Arcs in the Momentum Space of Photonic Crystal Slabs
Exceptional points (EPs) are special spectral degeneracies of non-Hermitian operators: at the EP, the complex eigenvalues coalesce, i.e., they become degenerate in both their real and imaginary parts. In two-dimensional (2D) photonic crystal lattices, these elements can be tailored through structural engineering. In particular, it is known that a quadratic degeneracy in the photonic band structure can be split into a pair of Dirac points (DPs) by breaking one of the unit cell symmetries, and ea…

On string tension and initial temperature from transverse momentum spectra of heavy quarkonia in proton-proton collisions at the LHC
Peng-Cheng Zhang, Hailong Zhu, Fu-Hu Liu, Khusniddin K. Olimov
https://arxiv.org/abs/2506.10702

On string tension and initial temperature from transverse momentum spectra of heavy quarkonia in proton-proton collisions at the LHC
The string tension ($κ$) in the Schwinger mechanism and the effective temperature ($T$) in Bose-Einstein statistics are extracted from the transverse momentum ($p_T$) spectra of heavy quarkonia produced in proton-proton (p+p) collisions at the Large Hadron Collider (LHC). Here, $T$ derived from the heavy quarkonium $p_T$ spectra also represents the initial temperature of the collision system, as transverse flow has not yet formed when heavy quarkonia are produced. The related parameters ($κ$ …

Resonant helical dichroism in twisted dielectric metastructures
Yiyuan Wang, Chi Li, Haoyi Yu, Stefan A. Maier, Jinhui Shi, Haoran Ren, Kirill Koshelev
https://arxiv.org/abs/2506.14173

Resonant helical dichroism in twisted dielectric metastructures
Circular dichroism, arising from interactions with light fields of opposite spin angular momentum, has become a fundamental tool for molecular characterization. Meanwhile, helical dichroism (HD) - the dichroic response to vortex beams carrying opposite orbital angular momentum (OAM) - offers an alternative approach for probing chiral molecules and photonic structures. Previous demonstrations of HD have been limited to non-resonant light-matter interactions with chiral micro- and nanostructures,…

GUP, Lorentz Invariance (Non)-Violation, and Non-Commutative Geometry
Michael Bishop, Daniel Hooker, Peter Martin, Douglas Singleton
https://arxiv.org/abs/2506.11219

GUP, Lorentz Invariance (Non)-Violation, and Non-Commutative Geometry
In this work, we formulate a generalized uncertainty principle with both position and momentum operators modified from their canonical forms. We study whether Lorentz symmetry is violated and whether it can be saved with these modifications. The requirement that Lorentz invariance is not violated places restrictions on the way the position and momentum operators can be modified. We also investigate the connection between general uncertainty principle and non-commutative geometry models, e.g.,la…

Bistable random momentum transfer in a linear on-chip resonator
Tingyi Gu, Lorry Chang, Jiagui Wu, Lijun Wu, Hwaseob Lee, Young-Kai Chen, Masudur Rahim, Po Dong, Chee Wei Wong
https://arxiv.org/abs/2506.11859

Bistable random momentum transfer in a linear on-chip resonator
Optical switches and bifurcation rely on the nonlinear response of materials. Here, we demonstrate linear temporal bifurcation responses in a passive multimode microresonator, with strongly coupled chaotic and whispering gallery modes or WGMs. In microdisks, the chaotic modes exhibit broadband transfer within the deformed cavities, but their transient response is less explored and yields a random output of the analog signal distributed uniformly from 0 to 1. Here, we build chaotic states by per…

Three-loop QCD Mass Relation between the $\overline{\mathrm{MS}}$ and Symmetric-momentum Subtraction Scheme Away from the Chiral Limit
Long Chen, Marco Niggetiedt
https://arxiv.org/abs/2506.07451

Three-loop QCD Mass Relation between the $\overline{\mathrm{MS}}$ and Symmetric-momentum Subtraction Scheme Away from the Chiral Limit
The perturbative result for the quark-mass conversion factor between the $\overline{\mathrm{MS}}$ and regularization-independent symmetric-momentum subtraction scheme (RI/SMOM) away from the chiral limit, i.e. at non-zero quark masses (RI/mSMOM), is derived up to three loops in QCD, extending the existing result by two additional orders. We further explore an illuminating possibility that in Dimensional Regularization, the original RI/(m)SMOM renormalization conditions may be interpreted merely…

Gauges for quadratic gravity: the extended transverse gauge and the energy-momentum tensor of the massive spin-2 field
Matheus F. S. Alves, L. G. Medeiros, Davi C. Rodrigues
https://arxiv.org/abs/2506.10793

Gauges for quadratic gravity: the extended transverse gauge and the energy-momentum tensor of the massive spin-2 field
We study the 4D Einstein-Hilbert action extension based on the square of the curvature tensors. Analyses of gauge and perturbation modes are often done considering the Teyssandier gauge condition. Although this approach can be useful for other higher-order extensions of quadratic gravity, a generalized transverse (or Lorentz) gauge is clear and sufficient for the present case, as explained here. We provide a detailed analysis of the generalized transverse gauge condition, its residual gauge sym…

Isolated attosecond spatio-temporal optical vortices: Interplay between the topological charge and orbital angular momentum scaling in high harmonic generation
Rodrigo Martin-Hernandez, Luis Plaja, Carlos Hernandez-Garcia, Miguel A. Porras
https://arxiv.org/abs/2506.07465

Isolated attosecond spatio-temporal optical vortices: Interplay between the topological charge and orbital angular momentum scaling in high harmonic generation
The propagation properties and the nature of the transverse orbital angular momentum (t-OAM) of spatiotemporal optical vortices (STOVs) open new scenarios in high-harmonic generation (HHG), where the richness of the topological charge and OAM up-conversion are exposed. Through advanced numerical simulations, we demonstrate that HHG driven by spatio-spectral optical vortices produces far-field, extreme-ultraviolet STOV harmonics with non-scaling topological charge, i.e., with the same topologica…

Asymmetric muon-antimuon emission from $Z^0$ decays: a clear magnetometer in relativistic heavy-ion collisions
Alejandro Ayala, Ana Julia Mizher, Javier Rend\'on
https://arxiv.org/abs/2506.11370

Asymmetric muon-antimuon emission from $Z^0$ decays: a clear magnetometer in relativistic heavy-ion collisions
We show that a very clear signal of the presence of a strong magnetic field during the early stage of a high-energy heavy-ion collision is provided by the decay of the Z^0 into dimuon pairs. We find that the process is highly anisotropic, producing pairs mainly out of plane, as signaled by a negative value of v_2, and leads to a harder antimuon transverse momentum spectrum, compared with that of the muon transverse momentum spectrum. We also show that the process does not produce a significant …