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

Yang-Baxter Integrability and Exceptional-Point Structure in Pseudo-Hermitian Quantum Impurity Systems

This paper establishes a mathematically controlled framework for Yang-Baxter integrability in periodically driven pseudo-Hermitian quantum impurity systems, demonstrating how a modified RTT structure and biorthogonal Bethe ansatz enable the characterization of exceptional points through defective Gaudin matrices and square-root coalescence of rapidities.

Vinayak M. Kulkarni2026-04-24
🔢 mathematics

Quantum Mixing for Schrödinger eigenfunctions in Benjamini-Schramm limit

This paper establishes quantum mixing for Schrödinger eigenfunctions on a sequence of compact hyperbolic surfaces converging to the hyperbolic plane in the Benjamini-Schramm limit, utilizing the Duhamel formula and exponential mixing of the geodesic flow to apply the results to congruence covers, random high-genus surfaces, and many-body Bose gas models.

Kai Hippi, Félix Lequen, Søren Mikkelsen, Tuomas Sahlsten, Henrik Ueberschär2026-04-24
🔢 mathematics

The KMS and GNS Spectral Gap of Quantum Markov Semigroups

This paper proves that for quantum Markov semigroups with a faithful normal invariant state on arbitrary von Neumann algebras, the exponential decay rate with respect to the KMS inner product (and a broader class of operator monotone induced inner products) is bounded below by the decay rate with respect to the GNS inner product, thereby confirming a conjecture previously limited to the Gaussian case.

Melchior Wirth2026-04-24
🔢 mathematics

Residues of a tropical zeta function for convex domains

This paper defines an SLn(Z)\operatorname{SL}_n(\mathbb{Z})-invariant tropical zeta function for convex domains, proving that for C3C^3 strictly convex domains in dimension 2, it extends meromorphically with a simple pole at s=2/3s=2/3 whose residue is proportional to the equiaffine perimeter, thereby yielding a t1/3t^{1/3} asymptotic for the wave-front lattice perimeter.

Nikita Kalinin, Ernesto Lupercio, Mikhail Shkolnikov2026-04-24
🔢 mathematics

Algorithmic Locality via Provable Convergence in Quantum Tensor Networks

This paper establishes the first rigorous end-to-end theory for tensor network belief propagation on strongly injective projected entangled pair states, proving that the algorithm converges efficiently and exhibits "algorithmic locality," which allows local perturbations to be handled via local recomputation and enables accurate approximation of physical quantities in polynomial time.

Siddhant Midha, Yifan F. Zhang, Daniel Malz, Dmitry A. Abanin, Sarang Gopalakrishnan2026-04-24
🔢 mathematics

On crystallization in the plane for pair potentials with an arbitrary norm

This paper establishes that two-dimensional crystallization occurs for the Heitmann-Radin sticky disk potential under any arbitrary norm, proving that minimizers are affine transforms of triangular or square lattices determined by the norm's kissing number, while also constructing explicit pp-norm families for lattice crystallization and numerically identifying unexpected phase transitions in minimizers for Lennard-Jones and Epstein zeta potentials.

Laurent Bétermin (Université Claude Bernard Lyon 1), Camille Furlanetto (Université Claude Bernard Lyon 1)2026-04-23
⚛️ general relativity

Ti and Spi, Carrollian extended boundaries at timelike and spatial infinity

This paper defines invariant, Carrollian-geometric extended boundaries at timelike and spatial infinity (Ti and Spi) for asymptotically flat spacetimes, demonstrating their utility in characterizing asymptotic symmetries, realizing massive field scattering data, and naturally recovering the BMS and Poincaré groups along with Strominger's matching conditions.

Jack Borthwick, Maël Chantreau, Yannick Herfray2026-04-23