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

Continuous Data Assimilation for Semilinear Parabolic Equations with Multiplicative Observation Noise

This paper develops a general abstract theory for continuous data assimilation of semilinear parabolic equations under multiplicative observation noise within a Gelfand triple framework, proving mean square and almost sure convergence of the assimilation error and demonstrating its applicability to various PDE models including Navier-Stokes and Allen-Cahn equations.

Jochen Bröcker, Gianmarco Del Sarto, Matthias Hieber, Filippo Palma, Tarek Zöchling2026-05-12
🔬 condensed matter

Emergence of Tsallis Statistics from a Self-Referential Nonlinear Operator: A Variational Framework

This paper establishes an operator-theoretic foundation for nonextensive statistical mechanics by demonstrating that a variational framework based on a self-referential nonlinear operator naturally yields Tsallis statistics in the mean-field limit, with the entropic index qq emerging directly from the operator's structural exponents rather than being postulated.

Lucio Marassi2026-05-11
🔢 mathematics

Hydrodynamics and boundary-induced phase transitions in the nn-species particle-exchange process

This paper investigates the hydrodynamic behavior of the nn-species particle-exchange process, deriving explicit solutions for its coupled inviscid Burgers equations and characterizing the stationary phase diagram of the open system, which exhibits 2n+12n+1 boundary-induced phases analogous to the single-species asymmetric simple exclusion process.

Gunter M. Schutz, Ali Zahra2026-05-11