Quantum Stress Tensor Fluctuations of a Conformal Field and Inflationary Cosmology

Details Quantum Stress Tensor Fluctuations of a Conformal Field and Inflationary Cosmology Quantum Stress Tensor Fluctuations of a Conformal Field and Inflationary Cosmology

2010-05-25

arxiv.org/abs/1005.4530v1

Phys.Rev.D82:043501,2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

31 pages, 1 figure, uses LaTeX2epsilon

Scientific paper

10.1103/PhysRevD.82.043501

We discuss the additional perturbation introduced during inflation by quantum stress tensor fluctuations of a conformally invariant field such as the photon. We consider both a kinematical model, which deals only with the expansion fluctuations of geodesics, and a dynamical model which treats the coupling of the stress tensor fluctuations to a scalar inflaton. In neither model do we find any growth at late times, in accordance with a theorem due to Weinberg. What we find instead is a correction which becomes larger the earlier one starts inflation. This correction is non-Gaussian and highly scale dependent, so the absence of such effects from the observed power spectra may imply a constraint on the total duration of inflation. We discuss different views about the validity of perturbation theory at very early times during which currently observable modes are transplanckian.

Affiliated with

Also associated with

No associations

Rating

Quantum Stress Tensor Fluctuations of a Conformal Field and Inflationary Cosmology 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 Quantum Stress Tensor Fluctuations of a Conformal Field and Inflationary Cosmology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Stress Tensor Fluctuations of a Conformal Field and Inflationary Cosmology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-298022