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Abstract:

We reexamine the role that finite-temperature effects play in the dissipation of the initial anisotropy of the Universe. The issue was previously studied both in the zero- and finite-temperature cases. Our results show that the finite-temperature corrections do not introduce new qualitative behavior and that the anisotropy dissipation scenario is approximately the same as in the zero-temperature case. We use a formalism that is based on the extension to finite temperature of the closed-time-path method (it can be used to study systems out of thermal equilibrium). The effective equations that we obtain are real and causal. We compare our results with others obtained in the zero- and finite-temperature cases. We discuss some qualitative differences between the formalisms that are more frequently used to study real-time processes at finite temperature. © 1990 The American Physical Society.

Registro:

Documento: Artículo
Título:Anisotropy dissipation in the early Universe: Finite-temperature effects reexamined
Autor:Paz, J.P.
Filiación:Department of Physics and Astronomy, University of Maryland, College Park, MD 20742, United States
Instituto de Astronomia y Fisica del Espacio, CC 67 Suc 28, Buenos Aires, Argentina
Año:1990
Volumen:41
Número:4
Página de inicio:1054
Página de fin:1066
DOI: http://dx.doi.org/10.1103/PhysRevD.41.1054
Título revista:Physical Review D
ISSN:05562821
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v41_n4_p1054_Paz

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Citas:

---------- APA ----------
(1990) . Anisotropy dissipation in the early Universe: Finite-temperature effects reexamined. Physical Review D, 41(4), 1054-1066.
http://dx.doi.org/10.1103/PhysRevD.41.1054
---------- CHICAGO ----------
Paz, J.P. "Anisotropy dissipation in the early Universe: Finite-temperature effects reexamined" . Physical Review D 41, no. 4 (1990) : 1054-1066.
http://dx.doi.org/10.1103/PhysRevD.41.1054
---------- MLA ----------
Paz, J.P. "Anisotropy dissipation in the early Universe: Finite-temperature effects reexamined" . Physical Review D, vol. 41, no. 4, 1990, pp. 1054-1066.
http://dx.doi.org/10.1103/PhysRevD.41.1054
---------- VANCOUVER ----------
Paz, J.P. Anisotropy dissipation in the early Universe: Finite-temperature effects reexamined. 1990;41(4):1054-1066.
http://dx.doi.org/10.1103/PhysRevD.41.1054