Cardassian universe constrained by latest observations

Several Cardassian universe models including the original, modified polytropic and exponential Cardassian models are constrained by the latest Constitution Type Ia supernova data, the position of the first acoustic peak of CMB from the five years WMAP data and the size of baryonic acoustic oscillati...

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Veröffentlicht in:	Physics letters. B 2010-08, Vol.692 (2), p.152-156
Hauptverfasser:	Feng, Chao-Jun, Li, Xin-Zhou
Format:	Artikel
Sprache:	eng
Schlagworte:	Acoustics Cardassian universe Computational fluid dynamics Constraints Cosmology Elementary particles Exact sciences and technology Fluid flow Fluids Nuclear physics Oscillations Physics The physics of elementary particles and fields Universe Viscosity
Online-Zugang:	Volltext
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Zusammenfassung:	Several Cardassian universe models including the original, modified polytropic and exponential Cardassian models are constrained by the latest Constitution Type Ia supernova data, the position of the first acoustic peak of CMB from the five years WMAP data and the size of baryonic acoustic oscillation peak from the SDSS data. Both the spatial flat and curved universes are studied, and we also take into account the possible bulk viscosity of the matter fluid in the flat universe case.
ISSN:	0370-2693 1873-2445
DOI:	10.1016/j.physletb.2010.07.028