126 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 derives robust input-impedance and field-based quality factor expressions that accurately determine antenna bandwidth, establish improved lower bounds on quality factors for spherical-mode antennas surpassing traditional Chu/CR limits, and define criteria for supergain and the effects of dispersive tuning.
The paper demonstrates that while radiation from a uniformly accelerating charge escapes beyond the Rindler wedge, no electromagnetic flux crosses infinity within the wedge itself, a result that holds true in both Minkowski and Rindler frames despite the non-trivial coordinate transformation at infinity.
This paper introduces ChatMOSP, a chemistry-grounded mobile agent that translates natural language requests into validated multiscale simulations of working-state catalysts by dynamically mapping reaction conditions to morphology and activity models, retrieving necessary parameters from databases or literature, and successfully replicating complex experimental phenomena like temperature-induced morphological transitions and oscillatory reaction behaviors.
This paper presents an elementary, symmetry-first derivation of the Lorentz transformation that rigorously establishes linearity and a general one-parameter family of inertial-frame transformations using only the Principle of Relativity and spacetime symmetries, deferring the light postulate to the final step to fix the universal constant and recover special relativity.
This paper revisits Koehler's experiment for measuring the ratio of specific heats by reformulating the complex analysis into a transparent, piecewise linear model that geometrically explains why the oscillation frequency closely matches the Ruchardt frequency, thereby making the experiment more accessible for physics education.
This paper establishes a unified, covariant, and information-theoretic framework for stochastic dynamics by maximizing Shannon entropy over a joint distribution of actions and endpoints, thereby deriving a Boltzmann-like action-space distribution that reproduces standard Brownian motion, extends naturally to relativistic regimes, and bridges the principle of least action with statistical inference without relying on functional path integration.
This paper derives exact analytical expressions for the voltage induced in a two-conductor dielectric-insulated transmission line of arbitrary cross-section by a monochromatic plane wave, utilizing radiation-absorption reciprocity and validating the results against ANSYS HFSS simulations.
This study benchmarks cylindrical blast wave theory against the OSIRIS-REx Sample Return Capsule reentry using 39 infrasound stations, identifying the Sakurai formulation as the most accurate model for predicting signal characteristics of non-ablating hypersonic bodies while demonstrating that the signal period is a robust observable for constraining blast radius.
This paper aims to bridge a gap in pedagogical literature by demonstrating the application of the Hamilton-Ostrogradski formalism to the Pais-Uhlenbeck oscillator and coupled oscillators, providing a foundation for advanced classical mechanics courses.
This paper presents a mathematical model for Nordic skiing that uses a three-dimensional space curve and a system of nonlinear ordinary differential equations to simulate skier dynamics, employing a specialized algorithm combining Hermite spline interpolation, numerical quadrature, and high-order ODE solvers to validate the approach against real-world data while demonstrating the practical application of undergraduate calculus and scientific computing concepts.