Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1998-06-09
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
6 pages, ISMC'98 (Potsdam), Latex file, sprocl.sty
Scientific paper
We consider scalar perturbations of energy--density for a class of cosmological models where an early phase of accelerated expansion evolves, without any fine--tuning for graceful exit, towards the standard Friedman eras of observed universe. The geometric procedure which generates such models agrees with results for string cosmology since it works if dynamics is dominated by a primordial fluid of extended massive objects. The main result is that characteristic scales of cosmological interest, connected with the extension of such early objects, are selected.}
Capozziello Salvatore
Lambiase Gaetano
Scarpetta Gaetano
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