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.

⚛️ high-energy theory

Free-Field Construction of Heterotic String Compactified on Calabi-Yau Orbifolds via Correspondence with N=2\mathcal{N}{=}2 SCFT Minimal Models

This paper establishes a correspondence between free-field and minimal-model constructions for heterotic string compactifications on Berglund-Hübsch Calabi-Yau manifolds and their orbifolds, using this link to verify modular invariance and derive conditions for complete vertex operators.

Grigory Makarov, Doron Gepner, Alexander Belavin2026-06-29
⚛️ high-energy theory

A UV-Finite Ryu-Takayanagi Relation from Relative Entropy in AdS3_3/CFT2_2

This paper establishes a UV-finite Ryu-Takayanagi relation in AdS3_3/CFT2_2 by utilizing relative entropy instead of divergent von Neumann entropy, demonstrating that the variation of the boundary relative entropy between a vacuum and a coherent state equals the variation of the bulk geodesic length divided by 4GN4G_N to linear order.

Albert Much, Philipp Dorau, Leonardo Sangaletti, Rainer Verch2026-06-29
🔢 mathematics

Uniqueness, analyticity and mixing for Gibbs point processes via spectral gaps

This paper establishes that a spectral gap condition for Gibbs point processes guarantees uniqueness of the infinite-volume measure, analyticity of the pressure, and rapid mixing, thereby significantly improving known bounds for the hard-sphere model and identifying repulsive potentials with no phase transitions, including those whose ground states correspond to the E8E_8 and Leech lattices.

Andreas Göbel, Matthew Jenssen, Marcus Michelen, Marcus Pappik, Will Perkins, Leon Schiller2026-06-29
🔢 mathematics

Static features from mixing in short- and long-range Lindbladians: Markov property and correlations

This paper establishes that the static correlation properties of mixed-state phases in long-range Lindbladian systems, specifically the polynomial decay of mutual and conditional mutual information, arise naturally from dynamical features like rapid mixing and frustration-freeness, thereby extending Markov property results to long-range regimes relevant for experimental platforms.

Paul Rosa-Ruiz, Matteo Scandi, Ángela Capel, Álvaro M. Alhambra2026-06-29
🔢 mathematics

Which Saddles Contribute? The South-East Rule for Multidimensional Integrals

This paper introduces a simple geometric "South-East" rule algorithm that determines which critical points contribute to the asymptotic evaluation of multidimensional integrals with exponential integrands, thereby eliminating the need for complex flow computations required by traditional Picard-Lefschetz methods and offering a systematic approach to identifying instanton contributions in real-time path integrals.

Inês Aniceto, Job Feldbrugge, Christopher J. Howls2026-06-29
🔢 mathematics

An operator algebraic characterization of the Riemannian vacuum Einstein equation in four dimensions

This paper constructs a new smooth 4-manifold invariant and an embedding into the hyperfinite II₁ factor that induces a Riemannian metric and "Hodge dynamics," demonstrating that the metric satisfies the Riemannian vacuum Einstein equation if and only if its curvature tensor lies in the fixed-point subalgebra of this dynamics, while also classifying these representations through the lens of thermal equilibrium states in algebraic quantum field theory.

Gabor Etesi2026-06-26✓ Author reviewed