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

Tropicalized quantum field theory and global tropical sampling

This paper demonstrates that tropicalizing scalar quantum field theory yields an exact, non-linear recursion solution for the quantum effective action that enables a polynomial-time algorithm to sample moduli spaces of metric graphs, thereby proving that perturbative QFT computations lie in the polynomial-time complexity class and successfully evaluating the ϕ4\phi^4 beta function at 50 loops.

Michael Borinsky2026-03-31
🔢 mathematics

ff-bifbox: A scalable, open-source toolbox for bifurcation analysis of nonlinear PDEs

This paper introduces ff-bifbox, an open-source, scalable toolbox that integrates FreeFEM and PETSc to perform numerical branch tracing, stability analysis, and time integration for large, time-dependent nonlinear PDEs on adaptively refined 2D and 3D meshes, validated through novel results on the Brusselator, plate buckling, and compressible Navier-Stokes systems.

Christopher M. Douglas, Pierre Jolivet2026-03-31
🔢 mathematics

Rogue waves and large deviations for 2D pure gravity deep water waves

This paper rigorously characterizes the tail probability of rogue wave formation in 2D pure gravity deep water waves by proving that they most likely arise through dispersive focusing over optimal timescales, utilizing a novel method that combines normal forms and probabilistic techniques to propagate statistical information without requiring Gaussian approximations.

Massimiliano Berti, Ricardo Grande, Alberto Maspero, Gigliola Staffilani2026-03-31
🔢 mathematics

A few comments on (hyper)kähler geometry

This paper presents two methodical observations in hyperkähler geometry: a simple explicit proof of a necessary and sufficient condition for a Kähler manifold to be hyperkähler, and a clarification of the two-stage Kähler reduction process (with the second stage identified as Hamiltonian reduction) illustrated through toy models reducing R3×S1\mathbb{R}^3 \times S^1 to S2S^2 and R7×S1\mathbb{R}^7 \times S^1 to the Taub-NUT metric.

A. V. Smilga2026-03-31
🌀 nonlinear sciences

Hirota-tau and Heun-function framework for Dirac vacuum polarization and quantum stabilization of kinks

This paper establishes a Hirota-tau and Heun-function framework for a modified affine Toda model to demonstrate that fermion-soliton interactions, governed by one-loop quantum corrections and a deformed Noether-topological current, yield stable kink configurations with a complete scattering spectrum that has implications for topologically protected states in quantum and condensed-matter systems.

Harold Blas2026-03-31