Volume 73, Number 1, January 2006
|Page(s)||149 - 155|
|Section||Geophysics, astronomy, and astrophysics|
|Published online||23 November 2005|
Slow rolling, inflation, and quintessence
Dipartimento di Fisica, Politecnico di Torino Corso Duca degli Abruzzi 24, I-10129 Torino, Italy
2 Dipartimento di Scienze Fisiche, Università Federico II di Napoli Complesso Universitario di Monte S. Angelo - Via Cintia, Ed. N, I-80126 Napoli, Italy
3 Istituto Nazionale di Fisica Nucleare, Sez. Napoli Complesso Universitario di Monte S. Angelo - Via Cintia, Ed. G, I-80126 Napoli, Italy
Accepted: 25 October 2005
We comment on the choice of the quintessence potential, examining the slow-roll approximation in a minimally coupled theory of gravity. We make some considerations on the potential behaviors, the related Γ parameter, and their relationships to phantom cosmology.
PACS: 98.80.-k – Cosmology / 98.80.Jk – Mathematical and relativistic aspects of cosmology / 98.80.Cq – Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.)
© EDP Sciences, 2005
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