Ronald Kahn

Hawking radiation in an inflationary universe

Abstract We construct a spacetime which models the “rolling phase” of a Linde-Guth scenario. Although the spacetime has neither the special symmetries, nor the event horizons, of de Sitter space, we show it does have de Sitter-like Hawking radiation. This Hawking temperature necessitates modifying the use of the finite temperature effective potential in the proposed scenarios.

Fluctuations in Models With Primordial Inflation

Abstract The recently proposed general framework for calculating the growth of primordial energy density fluctuations in cosmological models is applied to two models of phenomenological interest in which the cosmological evolution differs crucially from that in new inflationary universe models. Both in a model of primordial supersymmetric inflation and in Lindes proposal of chaotic inflation we verify the conjectured results.