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 arrow of time, irreversibility, equilibrium and measurement in quantum mechanics

This paper proposes that quantum mechanics becomes consistent with the second law of thermodynamics and naturally explains the measurement process, irreversibility, and the transition from pure states to mixtures by modeling quantum systems with continuous spectra in the thermodynamic limit, thereby deriving time-symmetry breaking, equilibrium, and the Born rule without ad hoc assumptions.

Christopher J. N. Coveney, Peter V. Coveney2026-07-22
⚛️ high-energy theory

Discrete Approximations to U⁡(1)\operatorname{U}(1) Principal Bundles in Abelian Gauge Theory

This paper demonstrates that the naive k→∞k\to\infty limit of Zk\mathbb{Z}_k-valued gauge theory fails to recover standard Maxwell theory by yielding a flat theory, and instead constructs a corrected sequence of field theories Tk\mathcal{T}_k that successfully converge to Maxwell theory by effectively projecting out principal U⁡(1)\operatorname{U}(1)-bundle sectors incompatible with Zk\mathbb{Z}_k structures, such as those containing magnetic monopoles.

Leron Borsten, Hyungrok Kim2026-07-21
🔬 condensed matter

Nanowire networks' interconnection graphs from their photomicrographs

This paper presents a post-processing pipeline to extract interconnection graphs from photomicrographs of silver nanowire networks, revealing that their experimental topologies exhibit small-world and modular characteristics while also analyzing how overestimation of junctions in zenithal-view images impacts key graph metrics like clustering coefficient and path length.

Javier Tau Anzoátegui, Juan Ignacio Diaz Schneider, Eduardo D. Martínez, Pablo Levy, Oscar Filevich, Cynthia P. Quintero (…)2026-07-21
🔬 materials science

Lattice initialisation and finite-size effects of non-equilibrium molecular dynamics simulations for heat transfer across graphene-copper interfaces

This study demonstrates that Kapitza resistance at graphene-copper interfaces in non-equilibrium molecular dynamics simulations is highly sensitive to lattice initialization and residual strain, which can cause a two-fold variation in thermal resistance through strain-dependent phonon spectral shifts and the formation of damping boundary layers, rather than being primarily determined by domain size or simple phonon spectral overlap.

L. A. van Goor, W. N. Edeling, D. Jafari, H. Lee, E. Luesink, W. W. Wits, A. V. Lyulin, B. J. Geurts2026-07-21