Por favor, use este identificador para citar o enlazar este documento: https://hdl.handle.net/2445/18897
Título: When telegrapher's equation furnishes a better approximation to transport equation than the difussion approximation
Autor: Porrà i Rovira, Josep Maria
Masoliver, Jaume, 1951-
Weiss, George H. (George Herbert), 1930-
Materia: Física estadística
Termodinàmica
Teoria del transport
Statistical physics
Thermodynamics
Transport theory
Fecha de publicación: 1997
Publicado por: The American Physical Society
Resumen: It has been suggested that a solution to the transport equation which includes anisotropic scattering can be approximated by the solution to a telegrapher's equation [A.J. Ishimaru, Appl. Opt. 28, 2210 (1989)]. We show that in one dimension the telegrapher's equation furnishes an exact solution to the transport equation. In two dimensions, we show that, since the solution can become negative, the telegrapher's equation will not furnish a usable approximation. A comparison between simulated data in three dimensions indicates that the solution to the telegrapher's equation is a good approximation to that of the full transport equation at the times at which the diffusion equation furnishes an equally good approximation.
Nota: Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.55.7771
Es parte de: Physical Review E, 1997, vol. 55, núm. 6, p. 7771-7774
URI: https://hdl.handle.net/2445/18897
Recurso relacionado: http://dx.doi.org/10.1103/PhysRevE.55.7771
ISSN: 1063-651X
Aparece en las colecciones:Articles publicats en revistes (Física de la Matèria Condensada)

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