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.

Intrinsic Ultracontractivity for a class of Schroedinger Semigroups in L2(Rn)L^{2}(\mathbb{R}^{n}) by Logarithmic Sobolev inequalities

This paper establishes a growth condition on the potential qq of a Schrödinger operator that implies Rosen inequalities for its ground state, which are then utilized to derive Logarithmic Sobolev inequalities and prove the intrinsic ultracontractivity of the associated Schrödinger semigroup.

Christoph Schwerdt, Alexander Mill, Dirk Hundertmark2026-02-05🔢 math-ph

Intrinsic Ultracontractivity for a class of Schroedinger Semigroups in L2(Rn)\mathrm{L}^{2}\left( \mathbb{R}^{n} \right) using Log-Sobolev-inequalities and duality arguments

This paper establishes the intrinsic ultracontractivity of weighted Schrödinger semigroups for a specific class of positive potentials by utilizing logarithmic Sobolev inequalities and duality arguments to prove continuous mapping between weighted L1L^1 and L2L^2 spaces.

Christoph Schwerdt, Ilham Ouelddris2026-02-05🔢 math-ph

A radiation and propagation problem for a Helmholtz equation with a compactly supported nonlinearity

This paper extends a theoretical and numerical framework for analyzing scattering on infinite plates to general two- and three-dimensional objects with compactly supported nonlinearities by transforming the full-space nonlinear Helmholtz equation into an equivalent bounded boundary-value problem using a nonlocal Dirichlet-to-Neumann operator, thereby enabling unique solutions and efficient finite element approximations.

Lutz Angermann2026-02-04🔢 math-ph

Two invariant subalgebras of rational Cherednik algebras

This paper investigates the ring-theoretic and homological properties of two invariant subalgebras of rational Cherednik algebras by realizing them as rings of invariants under reductive subgroups of SL2\rm SL_2, thereby characterizing their centers, establishing their Cohen-Macaulay and Auslander-Gorenstein nature, and analyzing their quantum Hamiltonian reductions at parameters t=0t=0 and t=1t=1.

Gwyn Bellamy, Misha Feigin, Niall Hird2026-02-04🔢 math-ph

Neural Thermodynamics: Entropic Forces in Deep and Universal Representation Learning

This paper proposes a rigorous entropic-force theory demonstrating that stochasticity and discrete-time updates in neural network training generate emergent forces that break continuous symmetries to explain universal representation alignment, the Platonic Representation Hypothesis, and the reconciliation of sharpness- and flatness-seeking optimization behaviors.

Liu Ziyin, Yizhou Xu, Isaac Chuang2026-02-04🧬 q-bio