A New Theory of Stochastic Inflation

Details A New Theory of Stochastic Inflation A New Theory of Stochastic Inflation

1996-04-10

arxiv.org/abs/gr-qc/9604022v3

Phys.Rev. D55 (1997) 1860-1874

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

28 pages in latex (uses revtex), no figures. Changes include 3 pages of extra detail in the derivation of the noise and dissip

Scientific paper

10.1103/PhysRevD.55.1860

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.

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