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
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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
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Palabras clave: | Classical Dirac fields; Phantom divide |
Año: | 2011
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Volumen: | 333
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Número: | 1
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Página de inicio: | 277
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Página de fin: | 285
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DOI: |
http://dx.doi.org/10.1007/s10509-010-0592-7 |
Título revista: | Astrophysics and Space Science
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Título revista abreviado: | Astrophys. Space Sci.
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ISSN: | 0004640X
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v333_n1_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, 333(1), 277-285.
http://dx.doi.org/10.1007/s10509-010-0592-7---------- CHICAGO ----------
Cataldo, M., Chimento, L.P.
"Crossing the phantom divide with a classical Dirac field"
. Astrophysics and Space Science 333, no. 1
(2011) : 277-285.
http://dx.doi.org/10.1007/s10509-010-0592-7---------- MLA ----------
Cataldo, M., Chimento, L.P.
"Crossing the phantom divide with a classical Dirac field"
. Astrophysics and Space Science, vol. 333, no. 1, 2011, pp. 277-285.
http://dx.doi.org/10.1007/s10509-010-0592-7---------- VANCOUVER ----------
Cataldo, M., Chimento, L.P. Crossing the phantom divide with a classical Dirac field. Astrophys. Space Sci. 2011;333(1):277-285.
http://dx.doi.org/10.1007/s10509-010-0592-7