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

Hadamard states for spacetimes with timelike boundaries

This paper establishes the existence and universality of pure quasifree Hadamard states for the Klein-Gordon field on globally hyperbolic spacetimes with timelike boundaries by formulating a microlocal condition on the compressed future cone via a bb-wave-front set, thereby avoiding complex analysis on the manifold with corners and constructing the states through a propagation theorem and deformation argument.

Alessandro Pietro Contini, Alexander Strohmaier2026-09-15
⚛️ high-energy theory

Integrable Chiral Quantum Field Theories with Spacetime-Dependent Interactions

This paper constructs a class of integrable chiral fermionic quantum field theories with spacetime-dependent interactions by utilizing a unitary two-body scattering matrix and characteristic coordinates to derive exact wavefunctions via discrete connections satisfying the Yang-Baxter equation and quantum Knizhnik-Zamolodchikov constraints, illustrated through a chiral SU(2)SU(2) Gross-Neveu realization.

Pradip Kattel2026-09-15
🔢 mathematics

Microscopic Parametric Correlations and Spectral Rigidity in the Non-Hermitian Threefold Way

This paper derives exact finite-NN integral representations and proposes the first microscopic two-time spectral kernels for the non-Hermitian Gaussian bulk classes AA, AI†AI^\dagger, and AII†AII^\dagger under Ornstein--Uhlenbeck evolution, revealing universal parametric correlations, spectral rigidity, and the role of eigenvector nonorthogonality in spectral diffusion.

Yan V Fyodorov2026-09-15
🔢 mathematics

On Rare Nonresonant Regions and Subdiffusive Transport in an Interacting Disordered Quantum Chain

This paper numerically validates the theoretical mechanism of subdiffusive transport in interacting disordered quantum chains by demonstrating that rare nonresonant regions, which act as insulating bottlenecks, persist with exponentially decaying but parametrically long survival probabilities across successive Schrieffer-Wolff scales, thereby confirming the physical relevance of rigorous constructive proofs at accessible system sizes.

A. Scardicchio, S. L. Sondhi2026-09-15