Tootfinder

Positivity bounds from thermal field theory entropy
Xin-Yi Liu, Yongjun Xu
https://arxiv.org/abs/2509.06630 https://arxiv.org/pdf/2509.06630

Positivity bounds from thermal field theory entropy
We present a novel approach to deriving positivity bounds on effective field theories by analyzing the thermodynamic behavior of thermal quantum field systems. Focusing on scalar theories with higher-dimensional operators, we compute the finite-temperature entropy using thermal field theory techniques. We argue that consistency with fundamental thermodynamic principles-specifically, the expectation that entropy increases with the introduction of new degrees of freedom-imposes nontrivial constra…

Surveying the theory space of pion dark matter
Anja Alfano, Nick Evans, Suchita Kulkarni, Werner Porod
https://arxiv.org/abs/2509.04892 https://arxiv.org/p…

Surveying the theory space of pion dark matter
We use a holographic model to survey the space of strongly coupled SU(Nc) gauge dynamics with QCD-like chiral symmetry breaking pattern for quarks in the fundamental representation. We systematically identify the light degrees of freedom (rho, sigma and pi mesons) that would make up the dark sector as a function of Nf, Nc and a common quark mass scale. We identify seven distinct effective theories that are of interest to explore and make a first summary of the expected dark matter phenomenology…

Modeling Magnetoelastic Wave Interactions in Magnetic Films and Heterostructures: A finite-difference approach
Peter Flauger, Matthias K\"u{\ss}, Michael Karl Steinbauer, Florian Bruckner, Bernhard Emhofer, Emeline Nysten, Matthias Wei{\ss}, Dieter Suess, Hubert J. Krenner, Manfred Albrecht, Claas Abert
https://arxiv.org/abs/2509.0600…

Modeling Magnetoelastic Wave Interactions in Magnetic Films and Heterostructures: A finite-difference approach
The (inverse) magnetostrictive effect in ferromagnets couples the magnetic properties to the mechanical stress, allowing for an interaction between the magnetic and mechanical degrees of freedom. In this work, we present a time-integration scheme for the self-consistent simulation of coupled magnetoelastic dynamics within the framework of finite-difference micromagnetism. The proposed implementation extends the Landau-Lifshitz-Gilbert equation by a strain-induced effective field and concurrentl…

An updated constraint on the Effective Field Theory of Dark Energy
Chi Zheng, Wei Liu, Zonghao Zhan, Wenjuan Fang
https://arxiv.org/abs/2509.13804 https://…

An updated constraint on the Effective Field Theory of Dark Energy
The Effective Field Theory of Dark Energy (EFTofDE) provides a systematic and model-independent framework to study dark energy (DE) and modified gravity (MG) with one additional scalar degree of freedom. It can describe the known models such as Quintessence, k-essence, DGP, $f(R)$, and Horndeski theories. In this work, we update constraints on EFTofDE by utilizing the most up-to-date public data including the BAO (DESI DR2), CMB (Planck 2018 \& ACT DR6), SNIa (DESY5), weak lensing (DESY3) and f…

Exploring Pintopia: Reflection Branes, Bordisms, and U-Dualities
Vivek Chakrabhavi, Arun Debray, Markus Dierigl, Jonathan J. Heckman
https://arxiv.org/abs/2509.03573 https://

Exploring Pintopia: Reflection Branes, Bordisms, and U-Dualities
The U-dualities of maximally supersymmetric non-chiral supergravity (SUGRA) theories lead to strong constraints on the non-perturbative structure of quantum gravity. In this paper we determine Spin- and Pin-lifts of these dualities, which extend this action to fermionic degrees of freedom. Among other things, this allows us to access non-supersymmetric sectors of these low energy effective field theories in which bosonic and fermionic degrees of freedom are treated differently. We use this refi…

TransLight: Image-Guided Customized Lighting Control with Generative Decoupling
Zongming Li, Lianghui Zhu, Haocheng Shen, Longjin Ran, Wenyu Liu, Xinggang Wang
https://arxiv.org/abs/2508.14814

TransLight: Image-Guided Customized Lighting Control with Generative Decoupling
Most existing illumination-editing approaches fail to simultaneously provide customized control of light effects and preserve content integrity. This makes them less effective for practical lighting stylization requirements, especially in the challenging task of transferring complex light effects from a reference image to a user-specified target image. To address this problem, we propose TransLight, a novel framework that enables high-fidelity and high-freedom transfer of light effects. Extract…

Precision gravity constraints on large dark sectors
Christopher Ewasiuk, Stefano Profumo
https://arxiv.org/abs/2509.02801 https://arxiv.org/pdf/2509.02801

Precision gravity constraints on large dark sectors
General relativity, treated as a low-energy effective field theory, predicts quantum corrections to Newton's law of gravitation arising from loops of matter and graviton fields. While these corrections are utterly negligible when considering the Standard Model particle content, the situation changes dramatically in the presence of a hidden or dark sector containing a very large number of light degrees of freedom. In such cases, loop-induced modifications to the Newtonian potential can accumulat…

An effective density matrix for vacua in asymptotically flat gravity
Temple He, Prahar Mitra, Kathryn M. Zurek
https://arxiv.org/abs/2509.13401 https://arx…

An effective density matrix for vacua in asymptotically flat gravity
We explicitly construct the density matrix associated to the vacuum state of a large spherically symmetric causal diamond of area $A$ in four-dimensional asymptotically flat gravity. We achieve this using the soft effective action, which characterizes the low-energy gravitational degrees of freedom that arise in the long-distance limit of the Einstein-Hilbert action and consists of both the soft graviton mode and the Goldstone mode arising from the spontaneous breaking of supertranslation symme…

Matrix Product Operator Constructions for Gauge Theories in the Thermodynamic Limit
Nicholas Godfrey, Ian P. McCulloch
https://arxiv.org/abs/2508.14145 https://

Matrix Product Operator Constructions for Gauge Theories in the Thermodynamic Limit
We present a general method for simulating lattice gauge theories in low dimensions using infinite matrix product states (iMPS). A central challenge in Hamiltonian formulations of gauge theories is the unbounded local Hilbert space associated with gauge degrees of freedom. In one spatial dimension, Gauss's law permits these gauge fields to be integrated out, yielding an effective Hamiltonian with long-range interactions among matter fields. We construct efficient matrix product operator (MPO) r…

Gravitational Waves and Cosmological Observables from First-Order Phase Transitions: Thermal Corrections at Low Temperature
Katharena Christy, James B. Dent, Sumit Ghosh, Jason Kumar, J. O'Thello Ward
https://arxiv.org/abs/2508.15918

Gravitational Waves and Cosmological Observables from First-Order Phase Transitions: Thermal Corrections at Low Temperature
We consider the impact on cosmological first-order phase transitions (FOPTs) of low-temperature thermal corrections to the effective potential. These are corrections from degrees of freedom whose field-dependent masses are much smaller than the nucleation temperature in the true vacuum, though they may be much larger than the nucleation temperature in the false vacuum. Although the general form of these corrections to the thermal effective potential can be quite complicated, we argue that the n…