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相关论文: A metriplectic formulation of polarized radiative …

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We consider the radiation transfer problem in the discrete-ordinate, plane-parallel approach. We introduce two benchmark problems with exact known solutions and show that for strongly non-homogeneous media the homogeneous layers…

计算物理 · 物理学 2007-05-23 M. -P. Zorzano , A. M. Mancho , L. Vazquez

We perform a quantum theoretical calculation of transition radiation by neutral particles with spin 1/2 equipped with magnetic moments and/or electric dipole moments. The limit of vanishing masses is treated exactly for arbitrary refraction…

高能物理 - 唯象学 · 物理学 2008-11-26 W. Grimus , H. Neufeld

We study the gravitational behaviour of a spherically symmetric radiating star when the fluid particles are in geodesic motion. We transform the governing equation into a simpler form which allows for a general analytic treatment. We find…

广义相对论与量子宇宙学 · 物理学 2009-11-13 S. Thirukkanesh , S. D. Maharaj

We study the radiative heat transfer and the Casimir-Lifshitz force occurring between two bodies in a system out of thermal equilibrium. We consider bodies of arbitrary shape and dielectric properties, held at two different temperatures,…

量子物理 · 物理学 2015-05-30 Riccardo Messina , Mauro Antezza

Solving the continuum radiative transfer equation in high opacity media requires sophisticated numerical tools. In order to test the reliability of such tools, we present a benchmark of radiative transfer codes in a 2D disc configuration.…

太阳与恒星天体物理 · 物理学 2015-05-13 C. Pinte , T. J. Harries , M. Min , A. M. Watson , C. P. Dullemond , P. Woitke , F. Menard , M. C. Duran-Rojas

We derive a reciprocity relation for vector radiative transport equation (vRTE) that describes propagation of polarized light in multiple-scattering media. We then show how this result, together with translational invariance of a…

光学 · 物理学 2017-01-26 Ugo Tricoli , Callum M. Macdonald , Anabela Da Silva , Vadim A. Markel

The illumination of an accretion disk around a black hole or neutron star by the central compact object or the disk itself often determines its spectrum, stability, and dynamics. The transport of radiation within the disk is in general a…

天体物理学 · 物理学 2009-11-06 Dimitrios Psaltis

The linear intensity profile of multiply scattered light in a slab geometry extrapolates to zero at a certain distance beyond the boundary. The diffusion equation with this "extrapolated boundary condition" has been used in the literature…

光学 · 物理学 2008-07-11 J. C. J. Paasschens , M. J. M. de Jong , C. W. J. Beenakker

The expression for polarized electric dipole moment of well-deformed reflection asymmetric nuclei is obtained in the framework of liquid-drop model in the case of geometrically similar proton and neutron surfaces. The expression for…

核理论 · 物理学 2015-05-28 V. Yu. Denisov

We simplify the formalism of Polder and Van Hove [Phys.Rev.B {\bf 4}, 3303(1971)], which was developed to calculate the heat transfer between macroscopic and nanoscale bodies of arbitrary shape, dispersive and adsorptive dielectric…

材料科学 · 物理学 2009-11-11 A. I. Volokitin , B. N. J. Persson

We present a new formal solution of the Lagrangian equation of radiative transfer that is useful in solving the equation of radiative transfer in the presence of arbitrary velocity fields. Normally a term due to the inclusion of the…

太阳与恒星天体物理 · 物理学 2009-11-13 S. Knop , P. H. Hauschildt , E. Baron

We present some analytical solutions to the Einstein equations, describing radiating collapsing spheres in the diffusion approximation. Solutions allow for modeling physical reasonable situations. The temperature is calculated for each…

广义相对论与量子宇宙学 · 物理学 2008-11-26 L. Herrera , A. Di Prisco , J. Ospino

A one-dimensional magnetophotonic crystal with a nonlinear defect placed either symmetrically or asymmetrically inside the structure is considered. Simultaneous effects of time-reversal nonreciprocity and nonlinear spatial asymmetry in the…

光学 · 物理学 2012-07-03 Vladimir R. Tuz , Sergei V. Zhukovsky , Sergey L. Prosvirnin

We developed the full magnetohydrodynamical analytical jet model that allows accurate reproducing of a transversal and longitudinal structure for a highly collimated relativistic jets. This model can be used as a setup for convenient…

高能天体物理现象 · 物理学 2025-10-29 E. E. Nokhrina , I. N. Pashchenko , V. A. Frolova , R. V. Todorov

I compute from first principles the local heating rate $q$ (the amount of electromagnetic energy converted to heat per unit time per unit volume) for electromagnetic waves propagating in magnetically and electrically polarizable media. I…

光学 · 物理学 2008-11-07 Vadim A. Markel

We generalize the invariant imbedding theory of the wave propagation and derive new invariant imbedding equations for the propagation of arbitrary number of coupled waves of any kind in arbitrarily-inhomogeneous stratified media, where the…

光学 · 物理学 2009-11-10 Kihong Kim , Dong-Hun Lee , H. Lim

In this paper, we study the inverse source problem for the biharmonic wave equation. Mathematically, we characterize the radiating sources and non-radiating sources at a fixed wavenumber. We show that a general source can be decomposed into…

数值分析 · 数学 2023-07-06 Yan Chang , Yukun Guo , Tao Yin , Yue Zhao

Closed-form, normalizable solutions of Dirac's equation propagating within a semi-infinite cylindrical waveguide are obtained in terms of ordinary and modified Bessel functions. These relativistic wave packets induce quantum backflow on a…

量子物理 · 物理学 2021-12-28 Siddhant Das

Propagation, transmission and reflection properties of linearly polarized plane waves and arbitrarily short electromagnetic pulses in one-dimensional dispersionless dielectric media possessing an arbitrary space-time dependence of the…

光学 · 物理学 2009-11-13 Fabio Biancalana , Andreas Amann , Alexander V. Uskov , Eoin P. O'Reilly

In this paper, we use the theory of symmetric Dirichlet forms to give a probabilistic interpretation of Calder\'{o}n's inverse conductivity problem in terms of reflecting diffusion processes and their corresponding boundary trace processes.

偏微分方程分析 · 数学 2015-03-27 Petteri Piiroinen , Martin Simon