Fourth-order gravities, statefinders and exotic cosmological singularities

Details Fourth-order gravities, statefinders and exotic cosmological singularities Fourth-order gravities, statefinders and exotic cosmological singularities

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1122..244d&link_type=abstract

PHYSICS AND MATHEMATICS OF GRAVITATION: Proceedings of the Spanish Relativity Meeting 2008. AIP Conference Proceedings, Volume

Mathematics

Experimental Tests Of Gravitational Theories, Approximation Methods, Equations Of Motion, Cosmology

Scientific paper

I discuss the construction of the fourth-order gravity models with the main stress put onto the brane models of this type. I suggest that these models can naturally be verified observationally by higher-order characteristics of the universe expansion called statefinders (jerk, kerk/snap, lerk/crackle, merk/pop etc.). I tight these to the occurrence of the exotic singularities in the universe, especially, the ones which involve the pressure or its derivatives blow-up only. I comment on a possible occurrence of such singularities in the near future referring to the observational data from supernovae.

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