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Title: String Inspired Brane World Cosmology
Author: Germani, Cristiano
Sopuerta, Carlos F.
Keywords: Cosmologia
Forats negres (Astronomia)
Black holes (Astronomy)
Issue Date: 21-May-2002
Publisher: American Physical Society
Abstract: We consider brane world scenarios including the leading correction to the Einstein-Hilbert action suggested by superstring theory, the Gauss-Bonnet term. We obtain and study the complete set of equations governing the cosmological dynamics. We find they have the same form as those in Randall-Sundrum scenarios but with time-varying four-dimensional gravitational and cosmological constants. By studying the bulk geometry we show that this variation is produced by bulk curvature terms parametrized by the mass of a black hole. Finally, we show there is a coupling between these curvature terms and matter that can be relevant for early universe cosmology.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2002, vol. 88, num. 23, p. 231101
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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