physics.class-ph papers

This collection explores the fundamental physics concepts that govern how matter and energy interact across the universe. From the invisible forces shaping our daily lives to the complex mechanics driving cosmic phenomena, these studies reveal the underlying rules of reality. Here, we translate cutting-edge research into insights anyone can understand, bridging the gap between abstract theory and tangible discovery.

Every new preprint in this category originates from arXiv, where researchers first share their latest findings with the global community. At Gist.Science, we process each of these submissions to provide both detailed technical summaries and clear, plain-language explanations. This dual approach ensures that whether you are a seasoned physicist or a curious learner, you can grasp the significance of every breakthrough without getting lost in dense equations.

Below are the latest papers in Class-Ph, freshly processed and ready for you to explore.

🔬 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

🔬 physics

Revisiting Stress Analysis in a Three-Dimensional Elastic Hollow Sphere under Uniaxial Compression via the Inverse Laplace Transform Expressions within an Elastodynamic Framework

This paper revisits the stress analysis of a three-dimensional elastic hollow sphere under uniaxial compression using an elastodynamic framework and Laplace transform techniques, deriving static solutions that reveal localized stress concentrations on the inner surface perpendicular to the applied load.

Satoshi Takada, Shintaro Hokada2026-08-03

🔬 physics

Multibranched parametric resonance and swallowtail catastrophe in electromechanical oscillators with nonlinear friction

This paper demonstrates both experimentally and theoretically that controlled nonlinear friction in a micromechanical oscillator can induce the coexistence of two distinct pairs of period-two states, a multistable phenomenon governed by a swallowtail catastrophe that expands the understanding of parametric resonance and nonequilibrium dynamics.

P. Y. Chan, L. Huang, X. Dong, M. I. Dykman, H. B. Chan2026-07-31

🔬 materials science

Instability-induced bistable shape-morphing kirigami structures

This paper presents an inverse design framework for anisotropic kirigami structures that utilizes controlled geometric frustration and instability-induced deployment to achieve programmable, stable, and tunable bistable shape-morphing capabilities validated through simulations and experiments.

Xiaoyuan Ying, Marcelo A. Dias2026-07-30

🔢 mathematics

The Maxwell Conjecture is False

The paper disproves Maxwell's conjecture by presenting a specific configuration of five point charges in Euclidean space that generates 24 non-degenerate critical points in its electrostatic potential, exceeding the conjectured maximum of $(n-1)^2$ .

Philip Arathoon, Gavin Ball, Matthew D. Kvalheim2026-07-30

⚛️ quantum physics

A resource theoretical unification of Mpemba effects: classical and quantum

This paper unifies classical and quantum Mpemba effects under a single resource-theoretical framework, demonstrating that thermal relaxation and symmetry restoration are governed by analogous mechanisms involving the initial overlap with the slowest relevant dynamical modes within the resource theories of athermality and asymmetry, respectively.

Alessandro Summer, Mattia Moroder, Laetitia P. Bettmann, Xhek Turkeshi, Iman Marvian, John Goold2026-07-29

🔬 optics

Nondiffracting Supertoroidal Pulses: Optical "Kármán vortex streets"

This paper reports the discovery of nondiffracting supertoroidal pulses (ND-STPs), which are propagation-robust, skyrmionic electromagnetic waves featuring a unique field structure analogous to von Kármán vortex streets in fluid dynamics, making them promising candidates for directed energy channels in telecommunications.

Yijie Shen, Nikitas Papasimakis, Nikolay I. Zheludev2026-07-28

🔬 optics

Simultaneous Superoscillations in Space and Time in Nonseparable Light Pulses

This paper demonstrates that band-limited supertoroidal light pulses can exhibit simultaneous superoscillations in both space and time, enabling the creation of localized hotspots that surpass the diffraction limit for enhanced imaging and metrology.

Yijie Shen, Nikitas Papasimakis, Nikolay I. Zheludev2026-07-28

🔬 physics

Fermi--Born--Infeld electrodynamics: a nonlinear theory with physical gauge

This paper introduces Fermi--Born--Infeld electrodynamics, a nonlinear theory that eliminates $U(1)$ gauge redundancy by constructing a Lagrangian dependent on the four-potential $A_\mu$ rather than the field strength, thereby dynamically enforcing the Lorenz gauge and potentially stabilizing a massive scalar photon in strong-field regimes.

Renato Vieira dos Santos2026-07-28

⚛️ general relativity

The Magnusian generator for dissipative systems and application to leading 2.5PN radiation-reaction dynamics

This paper extends the Magnusian framework to dissipative systems with nonlocal-in-time interactions using the in-in formalism, deriving a generalized generator that successfully models the finite-time evolution of Newtonian bound motion under leading 2.5PN radiation-reaction forces.

Francisco M. Blanco2026-07-28

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