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.

🔬 atomic physics

Hydrogen atom as a nonlinear oscillator under circularly polarized light: epicyclical electron orbits

Using Clifford algebra Cl2,0Cl_{2,0}, this paper derives the 2D electron orbits of a hydrogen atom under circularly polarized light as a superposition of five Fourier terms, revealing that the resulting epicyclical motion approximates Keplerian orbits at specific frequency ratios while exhibiting discontinuities near resonance.

Quirino Sugon Jr, Clint Dominic G. Bennett, Daniel J. McNamara2026-08-03
🔢 mathematics

Logical Dependence of Physical Determinism on Set-theoretic Metatheory

The paper argues that physical determinism is not independent of set-theoretic foundations, demonstrating that determinism verdicts for specific physical systems (such as Ising models and Kerr black holes) can vary between canonical extensions of ZFC like V=L and large cardinal assumptions, thereby proposing a field of "reverse physics" where the search for new axioms is continuous with the search for new physical laws.

Justin Clarke-Doane2026-08-03
🔢 mathematics

Entropy Geometry and Normalized Means on Infinite-Dimensional Hamiltonian Manifolds

This paper introduces a geometric-analytic framework for equilibrium statistical mechanics on infinite-dimensional Hamiltonian systems by utilizing normalized means to define entropy and free-energy functionals, thereby establishing the existence and uniqueness of exponential-family equilibrium states and their thermodynamic properties without relying on σ\sigma-additive invariant measures.

Jean-Pierre Magnot2026-08-03
🔬 materials science

Strength-degradation phase-field regularization of cohesive fracture: the antiplane case

This paper introduces a strength-degradation phase-field model for antiplane fracture that unifies limit analysis, plasticity, and various fracture regimes by decoupling strength, stiffness, and toughness, thereby allowing crack nucleation and propagation to be governed by an arbitrary convex strength surface and an elasto-cohesive length scale rather than being constrained by elastic energy.

Blaise Bourdin, Corrado Maurini2026-08-03