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gr-qc2004
A scalar field governed cosmological model from noncompact Kaluza-Klein theory
Jose Edgar Madriz Aguilar, Mauricio Bellini, Francisco Astorga Saenz
This paper is a review of a recently introduced cosmological model from a noncompact Kaluza-Klein theory for a single scalar field minimally coupled to gravity. We obtain that the…
gr-qc2000
Primordial fluctuations of the metric in the warm inflation scenario
Mauricio Bellini
I consider a semiclassical expansion of the scalar field in the warm inflation scenario. I study the evolution for the fluctuations of the metric around the Friedmann-Robertson-Wal…
gr-qc1999
Perturbations of the metric induced by back - reaction in the warm inflation scenario
Mauricio Bellini
A second-order expansion for the quantum fluctuations of the matter field was considered in the framemork of the warm inflation scenario. The friction and Hubble parameters were ex…