Standard cosmology in Chern-Simons gravity

Details Standard cosmology in Chern-Simons gravity Standard cosmology in Chern-Simons gravity

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011phrvd..84f3506g&link_type=abstract

Physical Review D, vol. 84, Issue 6, id. 063506

Other

Higher-Dimensional Gravity And Other Theories Of Gravity, Modified Theories Of Gravity, Cosmology, Mathematical And Relativistic Aspects Of Cosmology

Scientific paper

We consider a five-dimensional action which is composed of a gravitational sector and a sector of matter, where the gravitational sector is given by a Chern-Simons gravity action instead of the Einstein-Hilbert action. In the event that the matter action is the action for a perfect fluid, it is shown that the standard five-dimensional Friedmann-Robertson-Walker (FRW) equations and some of their solutions can be obtained, in a certain limit, from the so-called Chern-Simons-FRW field equations, which are the cosmological field equations corresponding to a Chern-Simons gravity theory. It is also shown, using a compactification procedure known as dynamic compactification, that the cosmological field equations obtained from the Chern-Simons gravity theory lead, in a certain limit, to the usual four-dimensional FRW equations.

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