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Abstract:

We investigate the simplest quintessence dissipative dark matter attractor cosmology characterized by a constant quintessence baryotropic index and a power-law expansion. We show a class of accelerated coincidence-solving attractor solutions converging to this asymptotic behavior. Despite its simplicity, such a "superattractor" regime provides a model of the recent universe that also exhibits an excellent fit to supernovae luminosity observations and no age conflict. Our best fit gives a= 1.71 ±0.29 for the power-law exponent. We calculate for this regime the evolution of density and entropy perturbations. ©2001 The American Physical Society.

Registro:

Documento: Artículo
Título:Quintessence dissipative superattractor cosmology
Autor:Chimento, L.P.; Jakubi, A.S.; Zuccalâ, N.A.
Filiación:Departamento de fi'Sica, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Palabras clave:article; cosmos; entropy; luminance; mathematical analysis; molecular model
Año:2001
Volumen:63
Número:10
DOI: http://dx.doi.org/10.1103/PhysRevD.63.103508
Título revista:Physical Review D
ISSN:05562821
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v63_n10_p_Chimento

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Citas:

---------- APA ----------
Chimento, L.P., Jakubi, A.S. & Zuccalâ, N.A. (2001) . Quintessence dissipative superattractor cosmology. Physical Review D, 63(10).
http://dx.doi.org/10.1103/PhysRevD.63.103508
---------- CHICAGO ----------
Chimento, L.P., Jakubi, A.S., Zuccalâ, N.A. "Quintessence dissipative superattractor cosmology" . Physical Review D 63, no. 10 (2001).
http://dx.doi.org/10.1103/PhysRevD.63.103508
---------- MLA ----------
Chimento, L.P., Jakubi, A.S., Zuccalâ, N.A. "Quintessence dissipative superattractor cosmology" . Physical Review D, vol. 63, no. 10, 2001.
http://dx.doi.org/10.1103/PhysRevD.63.103508
---------- VANCOUVER ----------
Chimento, L.P., Jakubi, A.S., Zuccalâ, N.A. Quintessence dissipative superattractor cosmology. 2001;63(10).
http://dx.doi.org/10.1103/PhysRevD.63.103508