On decoherence of cosmological perturbations and stochastic inflation
arXiv:1108.3994
Abstract
By making a suitable generalization of the Starobinsky stochastic inflation, we propose a classical phase space formulation of stochastic inflation which may be used for a quantitative study of decoherence of cosmological perturbations during inflation. The precise knowledge of how much cosmological perturbations have decohered is essential to the understanding of acoustic oscillations of cosmological microwave background (CMB) photons. In order to show how the method works, we provide the relevant equations for a self-interacting inflaton field. For pedagogical reasons and to provide a link to the field theoretical case, we consider the quantum stochastic harmonic oscillator.
21 pages, 1 figure, prepared for submission to JCAP
References in corpus (8)
- Stochastic Inflationary Scalar Electrodynamics
- Two loop stress-energy tensor for inflationary scalar electrodynamics
- Decoherence and entropy of primordial fluctuations. I: Formalism and interpretation
- Stochastic Inflation Revisited: Non-Slow Roll Statistics and DBI Inflation
- Decoherence and entropy of primordial fluctuations II. The entropy budget
- Decoherence in Quantum Mechanics
- Decoherence in an Interacting Quantum Field Theory: Thermal Case
- Quantum properties of a non-Gaussian state in the large-N approximation