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Abstract:

We use a macroscopic description of a system of relativistic particles based on adding a nonequilibrium tensor to the usual hydrodynamic variables. The nonequilibrium tensor is linked to relativistic kinetic theory through a nonlinear closure suggested by the entropy production principle; the evolution equation is obtained by the method of moments and together with energy-momentum conservation closes the system. Transport coefficients are chosen to reproduce second-order fluid dynamics if gradients are small. We compare the resulting formalism to exact solutions of Boltzmann's equation in 0+1 dimensions and show that it tracks kinetic theory better than second-order fluid dynamics. © 2013 American Physical Society.

Registro:

Documento: Artículo
Título:Macroscopic approximation to relativistic kinetic theory from a nonlinear closure
Autor:Peralta-Ramos, J.; Calzetta, E.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Cuidad Universitaria, Buenos Aires 1428, Argentina
Año:2013
Volumen:87
Número:3
DOI: http://dx.doi.org/10.1103/PhysRevD.87.034003
Título revista:Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:Phys Rev D Part Fields Gravit Cosmol
ISSN:15507998
CODEN:PRVDA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v87_n3_p_PeraltaRamos

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Citas:

---------- APA ----------
Peralta-Ramos, J. & Calzetta, E. (2013) . Macroscopic approximation to relativistic kinetic theory from a nonlinear closure. Physical Review D - Particles, Fields, Gravitation and Cosmology, 87(3).
http://dx.doi.org/10.1103/PhysRevD.87.034003
---------- CHICAGO ----------
Peralta-Ramos, J., Calzetta, E. "Macroscopic approximation to relativistic kinetic theory from a nonlinear closure" . Physical Review D - Particles, Fields, Gravitation and Cosmology 87, no. 3 (2013).
http://dx.doi.org/10.1103/PhysRevD.87.034003
---------- MLA ----------
Peralta-Ramos, J., Calzetta, E. "Macroscopic approximation to relativistic kinetic theory from a nonlinear closure" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 87, no. 3, 2013.
http://dx.doi.org/10.1103/PhysRevD.87.034003
---------- VANCOUVER ----------
Peralta-Ramos, J., Calzetta, E. Macroscopic approximation to relativistic kinetic theory from a nonlinear closure. Phys Rev D Part Fields Gravit Cosmol. 2013;87(3).
http://dx.doi.org/10.1103/PhysRevD.87.034003