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.

⚛️ high-energy theory

On the intrinsically flat cosmological models in a lattice

This paper investigates intrinsically flat spacetimes as viable cosmological models for periodic inhomogeneous matter distributions, establishing their geometric foundations, proving the existence and uniqueness of solutions to Einstein's equations under periodic boundary conditions, and presenting exact solutions that transition from early-time homogeneity to late-time structures of peaks and voids.

Eduardo Bittencourt, Leandro G. Gomes, Grasiele B. Santos2026-02-25
🔢 mathematics

Stability of thermal equilibrium in long-range quantum systems

This paper demonstrates that the stability of local observables in long-range quantum systems at thermal equilibrium is guaranteed by correlation decay and Lieb-Robinson bounds at high temperatures, with numerical evidence suggesting this robustness extends to broader interaction regimes, thereby supporting the reliability of analog quantum simulators.

Tim Möbus, Jorge Sánchez-Segovia, Álvaro M. Alhambra, Ángela Capel2026-02-25
🌀 nonlinear sciences

Relating auxiliary field formulations of 4d4d duality-invariant and 2d2d integrable field theories

This paper elucidates the connections between auxiliary field formulations of four-dimensional duality-invariant electrodynamics and two-dimensional integrable sigma models by demonstrating that their relationships are governed by Legendre transformations and field redefinitions, thereby establishing correspondences between specific formalisms and extending known families of integrable deformations.

Nicola Baglioni, Daniele Bielli, Michele Galli, Gabriele Tartaglino-Mazzucchelli2026-02-25