UNIGE document Scientific Article
previous document  unige:968  next document
add to browser collection

CMB anisotropies from pre-big bang cosmology

Published in Physical Review. D. 2001, vol. 63, no. 063501
Abstract We present an alternative scenario for cosmic structure formation where initial fluctuations are due to Kalb-Ramond axions produced during a pre-big bang phase of inflation. We investigate whether this scenario, where the fluctuations are induced by seeds and therefore are of isocurvature nature, can be brought in agreement with present observations by a suitable choice of cosmological parameters. We also discuss several observational signatures which can distinguish axion seeds from standard inflationary models. We finally discuss the gravitational wave background induced in this model and we show that it may be well within the range of future observations.
Full text
(ISO format)
VERNIZZI, Filippo, MELCHIORRI, Alessandro, DURRER, Ruth. CMB anisotropies from pre-big bang cosmology. In: Physical Review. D, 2001, vol. 63, n° 063501. https://archive-ouverte.unige.ch/unige:968

205 hits



Deposited on : 2009-02-26

Export document
Format :
Citation style :