Mathematical physics sits at the fascinating intersection where abstract equations meet the fundamental laws of our universe. This field uses rigorous mathematical tools to model everything from the behavior of subatomic particles to the curvature of spacetime, turning complex theories into testable predictions. It is the language through which physicists describe reality, bridging the gap between pure mathematics and physical observation.

On Gist.Science, we process every new preprint published in this category on arXiv to make these dense studies accessible to everyone. Whether you are a specialist or a curious reader, you will find both plain-language overviews and detailed technical summaries for each paper. Below are the latest mathematical physics papers from arXiv, curated to help you explore the cutting edge of theoretical science.

🔢 mathematics

Exact Spectrum of a Curvature-Adapted Z23\mathbb{Z}_{2}^{3} Dunkl--Deng--Fan/Eckart System

This paper constructs and exactly solves a curvature-adapted radial Dunkl Hamiltonian for the Z23\mathbb{Z}_{2}^{3} group on 3D hyperbolic space under the condition α=2κ\alpha=2\kappa, deriving the discrete spectrum, Jacobi-polynomial eigenfunctions, and normalizability constraints to isolate the specific effects of negative curvature and reflection deformation on bound-state properties.

Nikko John Leo S. Lobos2026-08-28
🔬 materials science

When chemical potential continuity fails: kinetic interface models for hydrogen isotope transport

This paper introduces a kinetic interface model implemented in FESTIM that replaces the flawed assumption of chemical potential continuity with reversible mass-action reaction channels, revealing that hydrogen isotope transport across metal/molten-salt interfaces is governed by dynamic branching ratios and redox states rather than fixed thermodynamic equilibrium, thereby correcting underestimations of permeation flux and ill-posed conditions for multiple isotopes.

Remi Delaporte-Mathurin, James Dark2026-08-28
🔢 mathematics

Emptiness formation in the Lieb-Liniger gas: hydrodynamic instantons and a conjectured rate function

This paper proposes a parameter-free integral equation for the rate function governing the emptiness formation probability in the ground state of the repulsive Lieb-Liniger Bose gas, deriving it from a dual-field Fredholm-determinant representation and validating it against known limits and extensive numerical hydrodynamic simulations.

Boris A. Khanikati, Alexander G. Abanov2026-08-28
🔢 mathematics

Coupled stochastic variational principles for multiscale surface gravity waves -- Part I: theoretical framework

This paper establishes a comprehensive stochastic variational framework for multiscale surface gravity waves by decomposing the velocity potential into deterministic and stochastic components, deriving coupled path-wise and expected evolution equations that preserve the system's Hamiltonian structure and provide a rigorous foundation for reduced stochastic models and kinetic theory.

Etienne Mémin, Arnaud Debussche2026-08-28
🔢 mathematics

Stochastic Transport and Wave Interactions for Multiscale Surface Gravity Waves: Part II: Kinetic Theory and Ocean-Wave Applications

This paper develops a kinetic theory for deep-water surface gravity waves interacting with unresolved stochastic velocity fields, demonstrating that stochastic transport can drive spectral evolution through diffusive scattering and effective quartic interactions that often exceed classical resonant four-wave interaction rates in realistic oceanic conditions.

E. Mémin, B. Chapron, A. Debussche, L Marié2026-08-28
🔢 mathematics

2-Morita Theory of E2E_2-Algebras and Module Categories

This paper establishes a systematic framework for nn-Morita equivalence of topological orders using nn-Morita categories, unifying various notions of equivalence and proving that for n=1,2n=1,2, the algebraic description of higher Morita theory is equivalent to its realization via module categories, thereby clarifying the relationships among defects in topological orders through the natural emergence of bi-bimodules.

Rongge Xu, Holiverse Yang2026-08-28