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

A generalized Coulomb problem for a spin-1/2 fermion

This paper derives exact bound-state solutions and energy spectra for a spin-1/2 fermion governed by the Dirac equation with a general combination of scalar, vector, and tensor Coulomb potentials in 3+1 dimensions, establishing a direct mapping between planar and spherical problems while validating existing results and introducing new cases involving broken spin and pseudospin symmetries.

V. B. Mendrot, A. S. de Castro, P. Alberto2026-03-24
🔢 mathematics

Non-Hermiticity induced thermal entanglement phase transition

This paper demonstrates that non-Hermiticity in a two-qubit asymmetric Heisenberg XYXY system can induce a thermal entanglement phase transition, where maximal entanglement emerges above a critical non-Hermiticity threshold due to ground state degeneracy rather than exceptional points, while proposing a singular-value-decomposition approach for computing entanglement in such bi-orthogonal systems.

Bikashkali Midya2026-03-24
🔢 mathematics

On geometric hydrodynamics and infinite-dimensional magnetic systems

This paper introduces the magnetic Euler-Arnold equation by combining Arnold's geometric approach to fluid dynamics with his formulation of charged particle motion in magnetic fields, demonstrating that several important infinite-dimensional systems—including the Korteweg-de Vries and global quasi-geostrophic equations—can be interpreted as such magnetic geodesic flows while establishing new well-posedness results.

Levin Maier2026-03-23
🔢 mathematics

Character Formulas for Kirillov-Reshetikhin Modules via Folding of Supercharacters of gl(MN)\mathfrak{gl}(M|N)

This paper derives decomposition formulas for supercharacters of quantum affine ortho-symplectic superalgebras and twisted quantum affine superalgebras via a folding procedure applied to gl(MN)\mathfrak{gl}(M|N) supercharacters, ultimately providing explicit character formulas for Kirillov-Reshetikhin modules that confirm a conjecture based on Bethe ansatz analysis.

Zengo Tsuboi2026-03-23