The curvature perturbation in power law (e.g. extended) inflation

Details The curvature perturbation in power law (e.g. extended) inflation The curvature perturbation in power law (e.g. extended) inflation

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phlb..274..168l&link_type=abstract

Physics Letters B, Volume 274, Issue 2, p. 168-172.

Physics

96

Scientific paper

The inflationary contribution to the large scale curvature perturbation is calculated precisely in power law inflation, as well as the resulting constraint on the inflationary potential coming from the observational bound on the microwave background anisotropy. The result is essentially the same as that of earlier approximate calculations; for a scale factor with time dependence a~tp, the upper bound on the energy scale at the end of inflation decreases exponentially with the p, being equal to 1014 GeV at p=6 and to 103 GeV at p=1.6. In extended inflation these values of p correspond to the Brans-Dicke parameter ω=10 and ω=1.7.
Supported by an SERC Research Studentship.

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