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hep-th2002★ 20 cited
Gauge invariant cosmological perturbation theory for braneworlds
Alain Riazuelo, Filippo Vernizzi, Danièle Steer +1
We derive the gauge invariant perturbation equations for a 5-dimensional bulk spacetime in the presence of a brane. The equations are derived in full generality, without specifying…
hep-ph2002★ 134 cited
Adiabatic perturbations in pre big bang models: matching conditions and scale invariance
R. Durrer, F. Vernizzi
At low energy, the four-dimensional effective action of the ekpyrotic model of the universe is equivalent to a slightly modified version of the pre big bang model. We discuss cosmo…