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

The SnS_n-equivariant Euler characteristic of M1,n(Pr,d)\overline{\mathcal{M}}_{1, n}(\mathbb{P}^r, d)

This paper computes the SnS_n-equivariant topological Euler characteristic of the Kontsevich moduli space M1,n(Pr,d)\overline{\mathcal{M}}_{1, n}(\mathbb{P}^r, d) by deriving a closed formula for the non-rational-tail subspace via torus localization and expressing the full result through plethysm with a genus-zero contribution.

Siddarth Kannan, Terry Dekun Song2026-03-16
🔢 mathematics

Hessian in the spinfoam models with cosmological constant

This paper introduces a general method based on the transverse intersection of submanifolds in phase space to prove the non-degeneracy of the Hessian in spinfoam vertex amplitudes with a cosmological constant, thereby validating the stationary phase approximation for non-degenerate geometric 4-simplices in de Sitter or anti-de Sitter space and confirming the model's connection to semiclassical gravity without dominant exceptional contributions.

Wojciech Kamiński, Qiaoyin Pan2026-03-16
🔢 mathematics

Exact time-evolving resonant states for open double quantum-dot systems with spin degrees of freedom

This paper presents an exact analytical solution for time-evolving resonant states in an open double quantum-dot system with spin and Coulomb interactions, deriving a non-Hermitian effective Hamiltonian that identifies four types of two-body resonant states and enables the precise calculation of survival and transition probabilities for localized electrons.

Akinori Nishino, Naomichi Hatano2026-03-16
🔢 mathematics

Exact strong zero modes in quantum circuits and spin chains with non-diagonal boundary conditions

This paper constructs exact strong zero mode operators in integrable quantum circuits and the spin-1/2 XXZ chain with non-diagonal open boundary conditions that break bulk U(1) symmetry, demonstrating their role in inducing infinite boundary coherence times while showing they become spatially non-local and dynamically insignificant when mapped to the asymmetric simple exclusion process.

Sascha Gehrmann, Fabian H. L. Essler2026-03-16