Density Fluctuation in Extended Inflationary Universe

Details Density Fluctuation in Extended Inflationary Universe Density Fluctuation in Extended Inflationary Universe

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pthph..87..401n&link_type=abstract

Progress of Theoretical Physics, Vol. 87, No. 2, pp. 401-407

Physics

4

Scientific paper

We evaluate the density perturbation which arises from quantum fluctuation in the extended inflation model from the first principle, i.e., quantum field theory in curved space-time and the gauge invariant linear perturbation theory. We show that the density perturbation is not scale-invariant, and that its spectrum is enhanced slightly in the long-wavelength region. The amplitude of the perturbation slightly differs from that of the often quoted in literatures.

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