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.

⚛️ general relativity

Causal Structure of Spacetime Singularities and Their Observable Signatures

This paper analyzes the causal structure and geodesic dynamics of horizonless JMN-1 and JNW spacetimes to demonstrate how their distinct singularity types and effective repulsive behaviors produce unique strong-field lensing and shadow signatures that could be observationally distinguished from black holes by instruments like the Event Horizon Telescope.

Bina Patel, Jahnvi Mistry, Ayush Bidlan, Parth Bambhaniya2026-03-24
🔢 mathematics

On Sampling Methods for Inverse Biharmonic Scattering Problems in Supported Plates

This paper establishes the theoretical foundations for the linear and direct sampling methods to qualitatively recover supported cavities in thin elastic plates governed by the biharmonic wave equation, demonstrating through numerical experiments that both methods robustly identify obstacle locations, with the direct sampling method offering superior stability and computational efficiency.

Carlos Borges, Rafael Ceja Ayala, Peter Nekrasov2026-03-24
🔢 mathematics

A generalized Coulomb problem for a spin-1/2 fermion

This paper derives exact bound-state solutions and energy spectra for a spin-1/2 fermion governed by the Dirac equation with a general combination of scalar, vector, and tensor Coulomb potentials in 3+1 dimensions, establishing a direct mapping between planar and spherical problems while validating existing results and introducing new cases involving broken spin and pseudospin symmetries.

V. B. Mendrot, A. S. de Castro, P. Alberto2026-03-24
🔢 mathematics

Non-Hermiticity induced thermal entanglement phase transition

This paper demonstrates that non-Hermiticity in a two-qubit asymmetric Heisenberg XYXY system can induce a thermal entanglement phase transition, where maximal entanglement emerges above a critical non-Hermiticity threshold due to ground state degeneracy rather than exceptional points, while proposing a singular-value-decomposition approach for computing entanglement in such bi-orthogonal systems.

Bikashkali Midya2026-03-24