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.

Reflection Symmetry, APS Boundary Conditions, and Equivariant Spectral Flow on a Warped Cylinder

This paper investigates reflection symmetry and Atiyah-Patodi-Singer boundary conditions for twisted Dirac operators on a warped cylinder, establishing that reflection compatibility requires a specific holonomy quantization and demonstrating how spectral flow decomposes into equivariant or mod-two invariants depending on whether the holonomy is fixed or varying.

Taro Kimura, Sanchita Sharma2026-05-04🔢 math-ph

Quantum transport on Bethe lattices with non-Hermitian sources and a drain

This paper investigates quantum transport on finite-generation Bethe lattices with non-Hermitian sources and a drain, revealing that the current reaches a maximum at a zero mode—often an exceptional point in PT\mathcal{PT}-symmetric systems—where only a limited number of eigenstates effectively penetrate from the periphery to the center, while the remaining states remain localized.

Naomichi Hatano, Hosho Katsura, Kohei Kawabata2026-05-01🔬 cond-mat.mes-hall

Thermodynamics of the Fermi-Hubbard Model through Stochastic Calculus and Girsanov Transformation

This paper applies stochastic calculus and Girsanov transformations to the Fermi-Hubbard model to derive a factorization-independent representation of thermodynamic correlation functions, which analytically proves the antiferromagnetic nature of spin-spin correlations at half-filling and enables the approximation of ground state energies via ordinary differential equations.

Detlef Lehmann2026-05-01🔢 math-ph

The Most Dispersed Subset of Random Points in Rd\mathbb{R}^d

This paper analytically derives the full statistical properties of the maximally dispersed subset of NN random points in Rd\mathbb{R}^d using mean-field theory and the replica method, revealing that for large populations and rotationally symmetric distributions, the optimal subset comprises all points lying outside a self-consistently determined dd-dimensional ball.

Fabio Deelan Cunden, Noemi Cuppone, Giovanni Gramegna, Pierpaolo Vivo2026-05-01🔢 math-ph

Superintegrability and choreographic obstructions in dihedral nn-body Hamiltonian systems

This paper analyzes planar nn-body Hamiltonian systems with DnD_n-invariant interactions to demonstrate that while superintegrability ensures periodicity through frequency commensurability, true collision-free choreographies require a stricter sectorwise phase-matching condition that restricts such solutions to single irreducible sectors or exact degeneracies, as explicitly illustrated in cases n=4,5,6n=4,5,6.

A M Escobar-Ruiz, M Fernandez-Guasti2026-05-01🔢 math-ph

The quantum group structure of long-range integrable deformations

This paper establishes a quantum group-theoretical framework for long-range deformations of homogeneous Yang-Baxter integrable spin chains by demonstrating that these deformations arise from a twist of the underlying algebra, resulting in a non-associative structure with a Drinfeld associator that encodes interaction terms while preserving perturbative integrability through a large associative substructure.

Koen Schouten, Marius de Leeuw2026-05-01🔢 math-ph