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Abstract:

In this paper we consider a spatially flat Friedmann-Robertson-Walker (FRW) cosmological model with cosmological constant, containing a stiff fluid and a classical Dirac field. The proposed cosmological scenario describes the evolution of effective dark matter and dark energy components reproducing, with the help of that effective multifluid configuration, the quintessential behavior. We find the value of the scale factor where the effective dark energy component crosses the phantom divide. The model we introduce, which can be considered as a modified ΛCDM one, is characterized by a set of parameters which may be constrained by the astrophysical observations available up to date. © 2011 Springer Science+Business Media B.V.

Registro:

Documento: Artículo
Título:Crossing the phantom divide with a classical Dirac field
Autor:Cataldo, M.; Chimento, L.P.
Filiación:Departamento de Física, Facultad de Ciencias, Universidad del Bío-Bío, Avenida Collao 1202, Casilla 5-C, Concepción, Chile
Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón I, 1428 Buenos Aires, Argentina
Palabras clave:Classical Dirac fields; Phantom divide
Año:2011
Volumen:331
Número:2
Página de inicio:277
Página de fin:285
Título revista:Astrophysics and Space Science
Título revista abreviado:Astrophys. Space Sci.
ISSN:0004640X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v331_n2_p277_Cataldo

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Citas:

---------- APA ----------
Cataldo, M. & Chimento, L.P. (2011) . Crossing the phantom divide with a classical Dirac field. Astrophysics and Space Science, 331(2), 277-285.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v331_n2_p277_Cataldo [ ]
---------- CHICAGO ----------
Cataldo, M., Chimento, L.P. "Crossing the phantom divide with a classical Dirac field" . Astrophysics and Space Science 331, no. 2 (2011) : 277-285.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v331_n2_p277_Cataldo [ ]
---------- MLA ----------
Cataldo, M., Chimento, L.P. "Crossing the phantom divide with a classical Dirac field" . Astrophysics and Space Science, vol. 331, no. 2, 2011, pp. 277-285.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v331_n2_p277_Cataldo [ ]
---------- VANCOUVER ----------
Cataldo, M., Chimento, L.P. Crossing the phantom divide with a classical Dirac field. Astrophys. Space Sci. 2011;331(2):277-285.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v331_n2_p277_Cataldo [ ]