Generation of density perturbations by inflation in scalar-tensor gravity theories

Details Generation of density perturbations by inflation in scalar-tensor gravity theories Generation of density perturbations by inflation in scalar-tensor gravity theories

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phlb..277...67s&link_type=abstract

Physics Letters B, Volume 277, Issue 1-2, p. 67-72.

Physics

2

Scientific paper

Density perturbations arising out of the quantum fluctuations in a Brans-Dicke field in the context of extended inflation have been studied. We have used a model in which the Brans-Dicke parameter varies with time. We find that the density perturbations are large in magnitude and have a scale invariant spectrum. The origin of these is discussed and it is shown that these place further constraints on the model.
Address after 15 Octobr 1991: Department of Physics and Astrophysics, University of Delhi 110 007, India.

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