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.

Bispectral rational functions and Leonard trios

This paper introduces the algebraic concept of Leonard trios as an extension of Leonard pairs, establishes their connection to bispectral rational functions and Heun operators, and initiates their classification by demonstrating that Wilson's rational functions serve as overlap coefficients with specific recurrence and summation properties.

Nicolas Crampé, Wolter Groenevelt, Quentin Labriet, Lucia Morey, Luc Vinet, Carel Wagenaar2026-01-22🔢 math-ph

qq-deformation of the Marchenko-Pastur law

This paper investigates the limiting spectral distribution of a qq-deformed random unitary ensemble associated with the little-qq Laguerre weight, deriving a qq-deformation of the Marchenko-Pastur law that exhibits a phase transition at a critical value and establishing its convergence and large deviation properties through moment methods, equilibrium problems, and orthogonal polynomial asymptotics.

Sung-Soo Byun, Yeong-Gwang Jung, Guido Mazzuca2026-01-15🔢 math-ph

Brownian motion with soft constraints in soft matter systems

This paper addresses the challenge of modeling stiff forces in soft matter systems by providing a practical summary of constrained Brownian dynamics equations with "soft" constraints and a novel singular perturbation theory derivation that validates these equations over relevant timescales, while also extending the framework to scenarios with spatially varying mobility.

Sophie Marbach, Adam Carter, Miranda Holmes-Cerfon2026-01-15🔢 math-ph