arXiv:gr-qc/9604022·v3·General Relativity and Quantum Cosmology
A New Theory of Stochastic Inflation
Andrew Matacz (University of Sydney, Australia)🇦🇺
Abstract
The stochastic inflation program is a framework for understanding the dynamics of a quantum scalar field driving an inflationary phase. Though widely used and accepted, there have over recent years been serious criticisms of this theory. In this paper I will present a new theory of stochastic inflation which avoids the problems of the conventional approach. Specifically, the theory can address the quantum-to-classical transition problem, and it will be shown to lead to a dramatic easing of the fine tuning constraints that have plagued inflation theories.
Comments: 28 pages in latex (uses revtex), no figures. Changes include 3 pages of extra detail in the derivation of the noise and dissipation kernels, and a more careful description of the approximations made. Results remain unchanged