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hep-th2005
Relic gravitons on Kasner-like branes
M. Cavaglia', G. De Risi, M. Gasperini
We discuss the cosmological amplification of tensor perturbations in a simple example of brane-world scenario, in which massless gravitons are localized on a higher-dimensional Kas…
hep-th1996
Relic gravitons from the pre-big bang: what we know and what we do not know
M. Gasperini
I discuss the status of present knowledge about a possible background of relic gravitons left by an early, pre-big bang cosmological epoch, whose existence in the past of our Unive…