187 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.
This paper investigates how a short-duration electric pulse induces a persistent "memory" effect in the collective cyclotron motion of charged particles, characterized not by trajectory focusing but by a lasting restructuring of the shear component within the trajectory congruence.
This paper critically re-examines the common textbook argument that active and passive gravitational masses must be equal to satisfy Newton's third law, demonstrating that this theoretical proof is not compelling and highlighting the need to revisit foundational assumptions in Newtonian mechanics.
This paper establishes a universal parabolic power-efficiency trade-off in battery discharging and derives an optimal multistage constant-current schedule that minimizes dissipation by balancing real-time load demands against a global deadline.
This paper investigates a quadratic dimensionless gauge transformation in quantum field theories to establish invariance and derive conservation laws for complex scalar, Abelian, and non-Abelian fields, while clarifying the roles of covariant derivatives and physical state equivalence through extensive theoretical and graphical analysis.
This paper proposes a structural variational resolution to the pathologies of the Abraham-Lorentz-Dirac equation by deriving constraints from a proper-time perspective that forbid self-induced variations, thereby eliminating runaway solutions and non-causal behavior without the need for regularization.
This paper develops a variational minimum principle for linear elastodynamics in heterogeneous materials lacking a stored energy function by transforming the problem into a degenerate elliptic system via dual fields, thereby establishing uniqueness and offering new insights into materials with indefinite elastic moduli.
This paper demonstrates that recurrence time entropy (RTE) is an effective diagnostic tool for characterizing weak chaos and stickiness in two-degree-of-freedom Hamiltonian flows, successfully distinguishing regular, chaotic, and sticky regions in the Hénon-Heiles system with results consistent with established methods like the largest Lyapunov exponent and SALI.
This paper argues that the Third Law of thermodynamics is logically redundant because the Second Law already precludes the cycles at absolute zero that Einstein claimed necessitated an independent postulate, thereby positioning the Nernst heat theorem as a consistency regulator rather than a distinct physical discovery.
This paper proposes a variational framework that treats reheating as a constrained optimization problem to identify equation-of-state histories that extremize specific cosmological observables, demonstrating that different signals like gravitational waves and primordial black holes select distinct regions of post-inflationary expansion histories without relying on microscopic models.
This paper establishes a unified spectral perturbation theory that quantifies how various wall admittance mechanisms—such as porosity, viscosity, and roughness—modify compressible boundary-layer instability by deriving an explicit sensitivity law that separates wall physics from outer-mode dynamics and provides a phase criterion for stabilization.