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

P(Φ)2\mathcal{P}(\Phi)_2 Theory from many-body quantum Gibbs states

This paper rigorously derives the P(Φ)2\mathcal{P}(\Phi)_2 measure on the two-dimensional torus as the limit of many-body quantum Gibbs states with general symmetric pp-body interactions by employing a graphical formalism to systematically organize Wick renormalization-induced lower-order terms and utilizing a uniform logarithmic stability estimate to control these terms via the leading interaction's positivity.

Phan Thành Nam, Zhilin Yang, Xiangchan Zhu2026-07-28
🔢 mathematics

Continuous Data Assimilation for the 2D Navier-Stokes Equations from Partial Tangential Boundary Observations

This paper establishes that continuous data assimilation for the two-dimensional Navier-Stokes equations with Navier-slip boundary conditions can achieve exponential synchronization using only finite-dimensional tangential velocity measurements on a boundary subset, provided the feedback strength and observation resolution are sufficient to generate a coercive spectral gap.

Gianmarco Del Sarto, Buddhika Priyasad2026-07-28
🔢 mathematics

Dirac geometry, deformation theory and shifted symplectic geometry

This paper establishes a Dirac deformation theory that interpolates between twisted Dirac and Poisson geometries, proving its compatibility with fundamental structural operations and demonstrating its power to uniformly recover diverse deformation phenomena ranging from quasi-Hamiltonian to Hamiltonian reduction and the transition from multiplicative to additive geometric structures.

Mohamed Moussadek Maiza2026-07-28