Decoherence of gauge-invariant metric fluctuations during inflation

Details Decoherence of gauge-invariant metric fluctuations during inflation Decoherence of gauge-invariant metric fluctuations during inflation

2001-05-02

arxiv.org/abs/gr-qc/0105011v2

Phys.Rev. D64 (2001) 043507

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

version accepted in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.64.043507

I study the gauge-invariant fluctuations of the metric during inflation. In the infrared sector the metric fluctuations can be represented by a coarse-grained field. We can write a Schroedinger equation for the coarse-grained metric fluctuations which is related to an effective Hamiltonian for a time dependent parameter of mass harmonic oscillator with a stochastic external force. I study the wave function for a power-law expanding universe. I find that the phase space of the quantum state for super Hubble scalar metric perturbations loses its coherence at the end of inflation. This effect is a consequence of interference between the super Hubble metric perturbations and its canonical conjugate variable, which is produced by the interaction of the coarse-grained scalar metric fluctuation with the environment.

Affiliated with

Also associated with

No associations

Rating

Decoherence of gauge-invariant metric fluctuations during inflation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Decoherence of gauge-invariant metric fluctuations during inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Decoherence of gauge-invariant metric fluctuations during inflation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-477285