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

Approach to optimal quantum transport via states over time

This paper proposes a novel framework for quantum optimal transport by defining transport costs as linear functions of "states over time" (the Jordan product of a density matrix and a transport map), revealing that this approach yields qualitatively different results from classical Monge transport theory, particularly in the analytically tractable case of unitary-invariant costs.

Matt Hoogsteder-Riera, John Calsamiglia, Andreas Winter2026-06-02
🔢 mathematics

Operator Algebras and Third Quantization

The paper proposes a novel operator algebraic framework called "Poissonization" to describe the rare topology-changing events in quantum gravity as a universal Poisson process, thereby explaining late-time spectral form factor plateaus and unifying the description of baby universe statistics and multi-boundary correlators across various models like Marolf-Maxfield and Jackiw-Teitelboim gravity.

Yidong Chen, Marius Junge, Nima Lashkari2026-06-02
🔢 mathematics

Ground State Excitations and Energy Fluctuations in Short-Range Spin Glasses

This paper demonstrates that in the Edwards-Anderson Ising spin glass, the non-existence of space-filling critical droplets implies that incongruent ground states would exhibit volume-scaling energy variance, a result which proves the uniqueness of the metastate in two dimensions and establishes that excitations with positive-density interfaces have energy differences diverging as the square root of the volume.

C. M. Newman, D. L. Stein2026-06-02
⚛️ general relativity

Future global stability of Maxwell-Jüttner equilibria and vacuum for the massless Boltzmann equation on FLRW spacetimes

This paper establishes the future global-in-time existence and uniqueness of small perturbations for both Maxwell-Jüttner equilibria and vacuum solutions of the massless Boltzmann equation on decelerating FLRW spacetimes with T3\mathbb{T}^3 topology, covering hard ball interactions for all expansion rates q[0,1]\mathfrak{q} \in [0,1] and vacuum stability for q>1/3\mathfrak{q} > 1/3.

Robert M. Strain, Martin Taylor, Renato Velozo Ruiz2026-06-02
🔭 astrophysics

Eigenvalue formulation of Stochastic Inflation and application to large perturbation generating inflationary features

This paper introduces a novel eigenvalue technique to solve the adjoint Fokker-Planck equation for the probability distribution of inflationary e-folds, revealing a previously overlooked power-law intermediate regime in quantum diffusion and characterizing how constant drift potentials qualitatively alter the distribution's peak and tail behavior in narrow- versus broad-well limits.

Swagat S. Mishra, Edmund J. Copeland, Anne M. Green2026-06-02