arXiv: Classical Physics最新文献_第4页

Superradiant scattering of orbital angular momentum beams 轨道角动量光束的超辐射散射

arXiv: Classical Physics Pub Date : 2018-09-21 DOI: 10.1103/PhysRevResearch.3.023242

Cisco Gooding, S. Weinfurtner, W. Unruh

引用次数: 7

On Maxwell’s electrodynamics in two spatial dimensions 二维麦克斯韦电动力学

arXiv: Classical Physics Pub Date : 2018-09-20 DOI: 10.1590/1806-9126-rbef-2019-0323

D. Boito, L. D. Andrade, G. D. Sousa, R. Gama, C. Y. London

引用次数: 18

Force and Hidden Momentum for Classical Microscopic Dipoles 经典微观偶极子的力和隐动量

arXiv: Classical Physics Pub Date : 2018-08-01 DOI: 10.2528/PIERB18092007

A. Yaghjian

引用次数: 4

Dielectric slab reflection/transmission as a self-consistent radiation phenomenon. 介质板反射/传输作为自洽辐射现象。

arXiv: Classical Physics Pub Date : 2018-06-24 DOI: 10.2528/PIERB18062303

J. Grzesik

{"title":"Dielectric slab reflection/transmission as a self-consistent radiation phenomenon.","authors":"J. Grzesik","doi":"10.2528/PIERB18062303","DOIUrl":"https://doi.org/10.2528/PIERB18062303","url":null,"abstract":"We revisit the electromagnetic problem of wave incidence upon a uniform, dissipative dielectric slab of finite thickness. While this problem is easily solved via interface field continuity, we treat it under the viewpoint of radiative self-consistency, with interior current sources gauged by ohmic/polarization comparisons against those of the exterior medium. Radiative self-consistency yields an integral equation over the slab field giving a fully constructive buildup of the reflected/transmitted contributions, without any need for implicit determination via boundary conditions. Solution steps lead to an exact cancellation of the interior field, and bring in still other contributions of a reference medium variety, required to balance the incoming excitation. Such balancing provides the linear conditions for slab field determination. This two-step solution provides evidence of Ewald-Oseen extinction, even though the analytic framework here differs from the proofs available. We solve the balancing equations by vector manipulation without determinants, and then offer a boundary value confirmation in the special case of perpendicular incidence. In an appendix, we allow the the upper/lower half spaces to differ, the upper serving as reference and remote launch site of the incoming excitation. Effective currents now exist both within the slab and throughout an entire half space, necessitating a provision for cross-talk between slab and the radiating half space. The appendix provides an accelerated presentation of these generalized features, but stops short of an explicit field solution by reason of algebraic inflation. All logical details are however displayed in plain view. The self-consistency program is far more elegant and physically far more satisfying than the prevailing method of scattered fields guessed as to their structure and then fixed by boundary conditions.","PeriodicalId":331413,"journal":{"name":"arXiv: Classical Physics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128702248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Symmetry reduction of the three-body problem based on Euler angles 基于欧拉角的三体问题对称化简

arXiv: Classical Physics Pub Date : 2018-04-12 DOI: 10.1063/1.4990550

M. Castellana

{"title":"Symmetry reduction of the three-body problem based on Euler angles","authors":"M. Castellana","doi":"10.1063/1.4990550","DOIUrl":"https://doi.org/10.1063/1.4990550","url":null,"abstract":"We consider the classical three-body problem with an arbitrary pair potential which depends on the inter-body distance. A general three-body configuration is set by three \"radial\" and three angular variables, which determine the shape and orientation, respectively, of a triangle with the three bodies located at the vertices. The radial variables are given by the distances between a reference body and the other two, and by the angle at the reference body between the other two. Such radial variables set the potential energy of the system, and they are reminiscent of the inter-body distance in the two-body problem. On the other hand, the angular variables are the Euler angles relative to a rigid rotation of the triangle, and they are analogous to the polar and azimuthal angle of the vector between the two bodies in the two-body problem. We show that the rotational symmetry allows us to obtain a closed set of eight Hamilton equations of motion, whose generalized coordinates are the thee radial variables and one additional angle, for which we provide the following geometrical interpretation. Given a reference body, we consider the plane through it which is orthogonal to the line between the reference and a second body. We show that the angular variable above is the angle between the plane projection of the angular-momentum vector, and the projection of the radius between the reference and the third body.","PeriodicalId":331413,"journal":{"name":"arXiv: Classical Physics","volume":"1995 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130360946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synchronization of a double pendulum with moving pivots: a study of the spectrum 带运动轴的双摆的同步:光谱的研究

arXiv: Classical Physics Pub Date : 2018-02-14 DOI: 10.22606/JAAM.2018.34001

F. Talamucci

引用次数: 1

Radiation Forces and the Abraham-Minkowski Problem 辐射力与亚伯拉罕-闵可夫斯基问题

arXiv: Classical Physics Pub Date : 2017-12-30 DOI: 10.1142/S0217732318300069

I. Brevik

{"title":"Radiation Forces and the Abraham-Minkowski Problem","authors":"I. Brevik","doi":"10.1142/S0217732318300069","DOIUrl":"https://doi.org/10.1142/S0217732318300069","url":null,"abstract":"Recent years have witnessed a number of beautiful experiments in radiation optics. Our purpose with this mini-review is to highlight some developments of radiation pressure physics in general, and thereafter to focus on the importance of the mentioned experiments in regard to the classic Abraham-Minkowski problem. That means, what is the \"correct\" expression for electromagnetic momentum density in continuous matter. In our opinion one sees relatively often that authors over-interpret the importance of their experimental findings with respect to the momentum problem. Most of these experiments are actually unable to discriminate between these energy-momentum tensors at all, since they can be easily described in terms of force expressions that are common for Abraham and Minkowski. Moreover, we emphasize the inherent ambiguity in applying formal conservation principles to the radiation field in a dielectric, the reason being that the electromagnetic field in matter is only a subsystem which has to be supplemented by the mechanical subsystem to be closed. Finally, we make some suggestions regarding the connection between macroscopic electrodynamics and the Casimir effect, suggesting that there is a limit for the magnitudes of cutoff parameters in QFT related to surface tension in ordinary hydromechanics.","PeriodicalId":331413,"journal":{"name":"arXiv: Classical Physics","volume":"23 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126154063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

Demystifying the constancy of the Ermakov-Lewis invariant for a time dependent oscillator 解时变振荡器Ermakov-Lewis不变量的常数

arXiv: Classical Physics Pub Date : 2017-12-20 DOI: 10.1142/S0217732318300057

T. Padmanabhan

引用次数: 22

Exponential or Power Law? How to Select a Stable Distribution of Probability in a Physical System 指数定律还是幂定律?如何在物理系统中选择一个稳定的概率分布

arXiv: Classical Physics Pub Date : 2017-11-20 DOI: 10.3390/ecea-4-05009

A. D. Vita

{"title":"Exponential or Power Law? How to Select a Stable Distribution of Probability in a Physical System","authors":"A. D. Vita","doi":"10.3390/ecea-4-05009","DOIUrl":"https://doi.org/10.3390/ecea-4-05009","url":null,"abstract":"A mapping of non-extensive statistical mechanics with non-additivity parameter q ≠ 1 into Gibbs’ statistical mechanics exists (E. Vives, A. Planes, PRL 88 2, 020601 (2002)) which allows generalization to q ≠ 1 both of Einstein’s formula for fluctuations and of the ’general evolution criterion’ (P. Glansdorff, I. Prigogine, Physica 30 351 (1964)), an inequality involving the time derivatives of thermodynamical quantities. Unified thermodynamic description of relaxation to stable states with either Boltzmann ( q = 1 ) or power-law ( q ≠ 1 ) distribution of probabilities of microstates follows. If a 1D (possibly nonlinear) Fokker-Planck equation describes relaxation, then generalized Einstein’s formula predicts whether the relaxed state exhibits a Boltzmann or a power law distribution function. If this Fokker-Planck equation is associated to the stochastic differential equation obtained in the continuous limit from a 1D, autonomous, discrete, noise-affected map, then we may ascertain if a a relaxed state follows a power-law statistics—and with which exponent—by looking at both map dynamics and noise level, without assumptions concerning the (additive or multiplicative) nature of the noise and without numerical computation of the orbits. Results agree with the simulations (J. R. Sanchez, R. Lopez-Ruiz, EPJ 143.1 (2007): 241–243) of relaxation leading to a Pareto-like distribution function.","PeriodicalId":331413,"journal":{"name":"arXiv: Classical Physics","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128545920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A Novel Asymptotic Solution to the Sommerfeld Radiation Problem: Analytic field expressions and the emergence of the Surface Waves Sommerfeld辐射问题的一种新的渐近解:解析场表达式和表面波的出现

arXiv: Classical Physics Pub Date : 2017-10-06 DOI: 10.2528/PIERM17082806

S. Sautbekov, Sotiris Bourgiotis, A. Chrysostomou, P. Frangos

引用次数: 4