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astro-ph2005
Inflaton field potential producing the exactly flat spectrum of adiabatic perturbations
Alexei A. Starobinsky
Presented is the exact solution of the problem of finding a potential of an inflaton scalar field for which adiabatic perturbations generated during a de Sitter (inflationary) stag…
astro-ph2005
Stability properties of some perfect fluid cosmological models
Vittorio Gorini, Alexander Kamenshchik, Ugo Moschella +2
Flat FRW perfect fluid cosmologies can be reproduced as particular solutions of suitable field theoretical models. Here we investigate the stability of perfect fluid model trajecto…