Phys. Rev. D 72, 083508 (2005) [5 pages]Homogeneous and isotropic big rips?Received 15 July 2005; published 14 October 2005 We investigate the way big rips are approached in a fully inhomogeneous description of the space-time geometry. If the pressure and energy densities are connected by a (supernegative) barotropic index, the spatial gradients and the anisotropic expansion decay as the big rip is approached. This behavior is contrasted with the usual big-bang singularities. A similar analysis is performed in the case of sudden (quiescent) singularities and it is argued that the spatial gradients may well be non-negligible in the vicinity of pressure singularities. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.72.083508
DOI:
10.1103/PhysRevD.72.083508
PACS:
98.80.Cq, 98.80.−k
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