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.

🔭 astrophysics

Projective Transformations for Regularized Central-Force Dynamics: Hamiltonian Formulation

This paper presents a Hamiltonian framework for regularizing and linearizing central-force dynamics by introducing a new canonical extension of projective decomposition, which yields closed-form solutions for inverse-square and inverse-cubic forces while being numerically validated for the two-body problem with J2 perturbations.

Joseph T. A. Peterson, Manoranjan Majji, John L. Junkins2026-09-17
🔢 mathematics

Numerical Approaches for Identifying the Time-Dependent Potential Coefficient in the Diffusion Equation

This paper establishes the theoretical well-posedness of an inverse problem for identifying a time-dependent potential coefficient in a one-dimensional diffusion equation and evaluates the accuracy and robustness of three distinct numerical methods—an integration-based scheme, a Newton-Raphson solver, and a physics-informed neural network—for solving it.

Arshyn Altybay, Michael Ruzhansky2026-09-17
🔢 mathematics

Unitary and Nonunitary A-D-E minimal models: Coset graph fusion algebras, defects, entropies, SREEs and dilogarithm identities

This paper investigates both unitary and nonunitary A-D-E minimal models with topological defects on the cylinder, demonstrating that a specific coset graph encodes key boundary conformal field theory structures like fusion algebras and g-factors, while also establishing their lattice realization through integrable restricted solid-on-solid models and deriving effective central charges via dilogarithm identities from Y-system asymptotics.

Paul A. Pearce, Jared Heymann, Thomas Quella2026-09-17
🔢 mathematics

Adaptive hybrid coupling with operator inference, the overlapping Schwarz alternating method and reinforcement learning

This paper introduces a reinforcement learning-based framework that dynamically adapts the fidelity of coupled full-order and reduced-order models within an overlapping Schwarz alternating method, enabling efficient and accurate online resolution of transient problems with propagating features without requiring reference solutions.

Trishit Mondal, Irina Tezaur, Anthony Gruber2026-09-17