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Brane worlds in 5D and warped compactifications in IIB
Physics Letters B
In computing potentials for moduli in for instance type IIB string theory in the presence of fluxes and branes a factorisable ansatz for the ten dimensional metric is usually made. We investigate the validity of this ansatz by examining the cosmology of a brane world in a five dimensional bulk and find that it contradicts the results obtained by using a factorizable ansatz. We explicitly identify the problem with the latter in the IIB case. These arguments support our previous work on this question.doi:10.1016/j.physletb.2004.10.035 fatcat:rcpwvo6vcfayziv6mjrmxukwua