Germani, CristianoSopuerta, Carlos F.2019-05-082019-05-082002-05-210031-9007https://hdl.handle.net/2445/132856We 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.4 p.application/pdfeng(c) American Physical Society, 2002CosmologiaForats negres (Astronomia)CosmologyBlack holes (Astronomy)info:eu-repo/semantics/article6600282019-05-08info:eu-repo/semantics/openAccess