Covariant Electromagnetism in Past-Light-Cone FormalismWe present a manifestly covariant formulation of relativistic electromagnetism, focusing on the computation of electromagnetic fields from moving charges in a manifestly Lorentz-covariant manner. The…Daiju Nakayama, Kin-ya Oda, Koichiro Yasuda·Aug 10, 2024SaveLearn
New Bounds on Spherical Antenna Bandwidth and Directivity: Updates to the Chu-Harrington LimitsThe Chu circuit model provides the basis for analyzing the minimum radiation quality factor, Q, of a given spherical mode. However, examples of electrically large spherical radiators readily…Carl Pfeiffer, Bae-Ian Wu·Aug 8, 2024SaveLearn
A note on the planar triangles in Minkowski spacetimeThe geometry of 2D Minkowski spacetime R1,1 (or Minkowski plane) is similar but fundamentally different from the more familiar Euclidean plane geometry. This note gives an elementary…Yan Cao·Aug 7, 2024SaveLearn
Acoustic Pancharatnam-Berry Geometric PhaseGeometric phases provide a unified framework for understanding diverse phenomena in quantum and classical physics. The Pancharatnam-Berry (PB) geometric phase, arising from variation of optical…Wanyue Xiao, Wenjian Kuang, Sibo Huang et al.·Aug 7, 2024SaveLearn
The treatment of conformable electromagnetic theory of Maxwell as a singular systemThe study explores the conformable electromagnetic field theory. The concept of the conformable delta function is introduced. Subsequently, the conformable Maxwell's equations are derived.Eqab. M. Rabei, Mohamed Ghaleb Al-Masaeed, Dumitru Baleanu·Aug 3, 2024SaveLearn
miniBLAST: a novel experimental setup for laboratory testing of structures under blast loadsWe present a novel experimental setup called miniBLAST, which enables systematic and repeatable laboratory tests of structures subjected to blast loads. The explosive source is based on the discharge…Ahmad Morsel, Filippo Masi, Emmanuel Marché et al.·Aug 2, 2024SaveLearn
Calculation of the Relaxation Modulus in the Andrade Model by Using the Laplace TransformIn the framework of the theory of linear viscoelasticity, we derive an analytical expression of the relaxation modulus in the Andrade model Gα( t) for the case of rational parameter…Juan Luis González-Santander, Giorgio Spada, Francesco Mainardi et al.·Jul 29, 2024SaveLearn
Phase transitions in rolling of irregular cylinders and spheresWhen placed on an inclined plane, a perfect 2D disk or 3D sphere simply rolls down in a straight line under gravity. But how is the rolling affected if these shapes are irregular or random? Treating…Daoyuan Qian, Yeonsu Jung, L. Mahadevan·Jul 29, 2024SaveLearn
Dispersion Characteristics of a Glide-Symmetric Square Patch Metamaterial with Giant AnisotropyThis paper investigates the dispersion characteristics of a highly anisotropic metamaterial comprised of metal square patches arranged in a glide symmetry pattern and submerged in vacuum. Theoretical…Jim A. Enriquez, Eugene Koreshin, Juan P. Del Risco et al.·Jul 23, 2024SaveLearn
Computation of Characteristic Mode for Regional Structure of Interconnected Metal BodiesExisting methods for calculating substructure characteristic modes require treating interconnected metal structures as a single entity to ensure current continuity between different metal bodies.…Chenbo Shi, Jin Pan, Xin Gu et al.·Jul 20, 2024SaveLearn
Representation of continuum equations in physical components for arbitrary curved surfacesContinuum equations are ubiquitous in physical modelling of elastic, viscous, and viscoelastic systems. The equations of continuum mechanics take nontrivial forms on curved surfaces. Although the…Sujit Kumar Nath·Jul 17, 2024SaveLearn
An explicit solution to the spinning ring problemA ring may be regarded as a torus with r << R, where R is the major radius and r is the minor radius. When such a ring is placed on a rough rod and released with some angular velocity, it may…Aradhya Jain·Jul 16, 2024SaveLearn
Allosteric propagation of curvature along filamentCan a filament transmit the curvatures across the constituting modules and control them at one of its end? Inspired by the observation of protofilament - constituent biopolymer of microtubule - this…Ken Sekimoto·Jul 15, 2024SaveLearn
Dynamical Similarity in Field TheoriesIn previous work I have shown that Herglotz actions reproduce the dynamics of classical mechanical theories which exhibit dynamical similarities. Recent work has shown how to extend field theories in…David Sloan·Jul 15, 2024SaveLearn
Harnessing Nonlinear Dynamics for Time-Driven Berry Phase in Classical SystemsPhases arising from cyclic processes are fundamental in physics, bridging quantum and classical domains and providing deeper insights into the topology and dynamics of physical systems. This study…Kazi T. Mahmood, M. Arif Hasan·Jul 14, 2024SaveLearn
Non-Bloch band theory for time-modulated discrete mechanical systemsThis study establishes a non-Bloch band theory for time-modulated discrete mechanical systems. We consider simple mass-spring chains whose stiffness is periodically modulated in time. Using the…Kei Matsushima, Takayuki Yamada·Jul 13, 2024SaveLearn
Numerical Analysis on the Spatiotemporal Characteristics of the Portevin-Le Chatelier Effect in Ti-12Mo AlloyA simplified 3D FE model based on McCormick's model is developed to numerically predict the spatiotemporal behaviors of the PLC effect in Ti-12Mo alloy tensile tests at 350 degrees C with strain…Shiyuan Luo, Yongxin Jiang, Sandrine Thuillier et al.·Jul 12, 2024SaveLearn
Electromagnetic Response Theory with Relativistic Corrections: Selfconsistency and Validity of VariablesSchrödinger-Pauli equation (SP-eq) derived from weakly relativistic approximation (WRA) of Dirac eq, combined with Electromagnetic (EM) field Lagrangian for variational principle, is expected to give…Kikuo Cho·Jul 9, 2024SaveLearn
Anisotropy in a wire medium resulting from the rectangularity of a unit cellThe study is focused on the dispersion properties of a wire medium formed by a rectangular lattice of parallel wires at the frequencies close to its plasma frequency. While the effective medium…Denis Sakhno, Rustam Balafendiev, Pavel A. Belov·Jul 8, 2024SaveLearn
On the locus formed by the maximum heights of an ultra-relativistic projectileWe consider the problem of relativistic projectiles in a uniform gravitational force field in an inertial frame. For the first time, we have found the curve that joins the points of maximum height of…Salvatore De Vincenzo·Jul 8, 2024SaveLearn
Comment on "Which is greater: eπ or πe? An unorthodox physical solution to a classic puzzle"In a recent Note (Am. J. Phys. 92:397, 2024; arXiv:2309.10826), Vallejo and Bove provide a physical argument based nominally on the second law of thermodynamics as a way of resolving the mathematical…Roderick M. Macrae·Jul 8, 2024SaveLearn
An embedding-aware continuum thin shell formulationCutting-edge smart materials are transforming the domains of soft robotics, actuators, and sensors by harnessing diverse non-mechanical stimuli, such as electric and magnetic fields. Accurately…Abhishek Ghosh, Andrew McBride, Zhaowei Liu et al.·Jul 5, 2024SaveLearn
Playing Lato-lato is Difficult and This is WhyLato-lato, a pendulum-based toy gaining popularity in Indonesian playgrounds, has sparked interest with competitions centered around maintaining its oscillatory motion. While some find it easy to…Fansen Candra, Zainul Abidin·Jul 3, 2024SaveLearn
Effects of different loading on the bifurcation of annular elastic rods: theory vs. experimentsThe bifurcation problem of a circular Euler-Bernoulli rod subject to a uniform radial force distribution is investigated under three distinct loading conditions: (i.) hydrostatic pressure, (ii.)…Matteo Gaibotti, Davide Bigoni, Arsenio Cutolo et al.·Jul 3, 2024SaveLearn
N-body linear force law allowing analytic solutionsWe present a pair-wise force law in a system of N particles that produces analytic solutions for arbitrary number of particles, masses, and initial conditions. Each pair of particles interacts via a…Joseph West, Sean P. Bartz·Jul 2, 2024SaveLearn