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Classical Physics papers — page 75

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On the Time-Range Dependency of the Beampatterns Produced by Arbitrary Antenna Arrays: Discussions on the Misplaced Expectations from Frequency Diverse Arrays
In the recent years constructing time-invariant spatial-focusing beampatterns by using frequency diverse arrays (FDAs) is conveyed in several papers. Further than time-invariant spatial-focusing…
Mahdi FartookzadehMar 7, 2019
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Classical many-body time crystals
Discrete time crystals are a many-body state of matter where the extensive system's dynamics are slower than the forces acting on it. Nowadays, there is a growing debate regarding the specific…
Toni L. Heugel, Matthias Oscity, Alexander Eichler et al.Mar 6, 2019
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Plane-strain waves in nonlinear elastic solids with softening
Propagation of elastic waves in damaged media (concrete, rocks) is studied theoretically and numerically. Such materials exhibit a nonlinear behavior, with long-time softening and recovery processes…
Harold Berjamin, Bruno Lombard, Guillaume Chiavassa et al.Mar 6, 2019
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On time relaxed schemes and formulations for dispersive wave equations
The numerical simulation of nonlinear dispersive waves is a central research topic of many investigations in the nonlinear wave community. Simple and robust solvers are needed for numerical studies…
Jean-Paul Chehab, Denys DutykhMar 6, 2019
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Hidden Time-Reversal Symmetry in Dissipative Reciprocal Systems
It is proven, without using the microscopic reversibility argument of Onsager, that lossy reciprocal systems have a hidden time-reversal symmetry. The key idea is that the dissipation channels of…
Mario G. SilveirinhaMar 5, 2019
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Maxwell's (D, H ) excitation fields: lessons from permanent magnets
Macroscopic Maxwellian electrodynamics consists of four field quantities along with electric charges and electric currents. The fields occur in pairs, the primary ones being the electric and magnetic…
Jonathan Gratus, Paul Kinsler, Martin W. McCallMar 5, 2019
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Stored energies and Q-factor of two-dimensionally periodic antenna arrays
The Q-factor for lossless three-dimensional structures with two-dimensional periodicity is here derived in terms of the electric current density. The derivation in itself is shape-independent and…
Andrei Ludvig-Osipov, B. L. G. JonssonMar 4, 2019
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Quasi-Continuous Metasurfaces for Orbital Angular Momentum Generation
A quasi-continuous composite perfect electric conductor-perfect magnetic conductor metasurface and a systematic metasurface design process are proposed for the orbital angular momentum (OAM)…
Menglin L. N. Chen, Li Jun Jiang, Wei E. I. ShaMar 4, 2019
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Stochastic Electrodynamics: The Closest Classical Approximation to Quantum Theory
Stochastic electrodynamics is the classical electrodynamic theory of interacting point charges which includes random classical radiation with a Lorentz-invariant spectrum whose scale is set by…
Timothy H. BoyerMar 3, 2019
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Space-Time Modulation: Principles and Applications
This paper overviews the principles, theoretical analysis and numerical simulation of STM media and their applications in communication systems. We first present a global perspective on the…
Sajjad Taravati, Ahmed A. KishkMar 1, 2019
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Multiscale thermodynamics of charged mixtures
A multiscale theory of interacting continuum mechanics and thermodynamics of mixtures of fluids, electrodynamics, polarization and magnetization is proposed. The mechanical (reversible) part of the…
Petr Vagner, Michal Pavelka, Ogul EsenFeb 28, 2019
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Revisiting the notion of "resonance wood" choice: a decompartementalised approach from violin makers' opinion and perception to characterization of material properties' variability
This work aims to improve our understanding of the resonance wood and to investigate the interactions between their physical-mechanical properties, natural variability, and the violin makers'…
Capucine Carlier, Ahmad Alkadri, Joseph Gril et al.Feb 28, 2019
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The rigid body and the pendulum revisited
In this paper we revisit the construction by which the SL(2,R) symmetry of the Euler equations allows to obtain the simple pendulum from the rigid body. We begin reviewing the original…
Manuel de la Cruz, Néstor Gaspar, Román LinaresFeb 27, 2019
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Pulsating Heat Pipe Simulations: Impact of PHP Orientation
The pulsating (called also oscillating) heat pipe (PHP) is a simple capillary tube bent in meander and filled with a two-phase fluid. We discuss numerical simulations of the 10-turn copper-water PHP…
Iaroslav Nekrashevych, Vadim NikolayevFeb 27, 2019
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An Efficient Analytical Evaluation of the Electromagnetic Cross-Correlation Green's Function in MIMO Systems
In this paper, we completely eliminate all numerical integrations needed to compute the far-field envelope cross-correlation (ECC) in multiple-input-multiple-output (MIMO) systems by deriving…
Debdeep Sarkar, Said Mikki, Yahia AntarFeb 27, 2019
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Quaternion Electromagnetism and the Relation with 2-Spinor Formalism
By using complex quaternion, which is the system of quaternion representation extended to complex numbers, we show that the laws of electromagnetism can be expressed much more simply and concisely.…
I. K. Hong, C. S. KimFeb 26, 2019
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On deformations of classical mechanics due to Planck-scale physics
Several quantum gravity and string theory thought experiments indicate that the Heisenberg uncertainty relations get modified at the Planck scale so that a minimal length do arises. This modification…
O. I. Chashchina, A. Sen, Z. K. SilagadzeFeb 26, 2019
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Time-reversal Symmetry in Antenna Theory
Here, I discuss some implications of the time-reversal invariance of lossless radiating systems. I highlight that time-reversal symmetry provides a rather intuitive explanation for the conditions of…
Mario G. SilveirinhaFeb 25, 2019
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Fresnel's equations in statics and quasistatics
Fresnel's equations describe reflection and transmission of electromagnetic waves at an interface between two media. It turns out that these equations can be used in quasistatics and even…
Johannes SkaarFeb 22, 2019
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Torsion of elastic solids with sparse voids parallel to the twist axis
With the purpose of investigating a linear elastic solid containing a dilute distribution of cylindrical and prismatic holes parallel to the torsion axis, the full-field solution for an infinite…
Summer Shahzad, Francesco Dal CorsoFeb 21, 2019
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Analytical graphic statics
Graphic statics is undergoing a renaissance, with computerized visual representation becoming both easier and more spectacular as time passes. While methods of the past are revived and tweaked,…
Tamás BaranyaiFeb 20, 2019
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Closed-form solutions for tilted three-part piecewise-quadratic half-plane contacts
A general half-plane contact problem in which the geometry is specified in a piecewise-quadratic sense over three segments is solved in closed form. This includes the effects of a moment applied…
Hendrik Andresen, David A. Hills, Jesus VazquezFeb 20, 2019
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Dynamics of 1-D Electron Motion under a Periodic Electric Field with Radiation Reaction Effect
We consider the 1-D motion of an electron under a periodic force and taking into account the effect of radiation reaction dissipation force on its motion, using the formulation of the radiation…
Gustavo V. López, Jorge LizarragaFeb 16, 2019
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On unconventional fall of rainbow spring
In this study we experimentally show that a stretched rainbow spring under gravity or extra weight may exhibit unconventional fall motion. Specially, when the rainbow spring is released from a high…
Jie Liu, Xing Wang, Jiongzhao Liang et al.Feb 15, 2019
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Refractive index and generalized polarizability
We investigate the role of retardation corrections to polarizability and to refractive index. We found that the classical electromagnetic theory of dielectrics requires corresponding modifications in…
Krzysztof Pachucki, Mariusz PuchalskiFeb 15, 2019
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