Quantum Stress Tensor Fluctuation Effects in Inflationary Cosmology

Details Quantum Stress Tensor Fluctuation Effects in Inflationary Cosmology Quantum Stress Tensor Fluctuation Effects in Inflationary Cosmology

2011-08-22

arxiv.org/abs/1108.4342v1

J. Phys. Conf. Series 330, 012006 (2011)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, proceedings of IARD 2010, Conference on Classical and Quantum Relativistic Dynamics of Particles and Fields, Hualien,

Scientific paper

10.1088/1742-6596/330/1/012006

We review several related investigations of the effects of the quantum stress tensor of a conformal field in inflationary cosmology. Particular attention will be paid to the effects of quantum stress tensor fluctuations as a source of density and tensor perturbations in inflationary models. These effects can possibly depend upon the total expansion factor during inflation, and hence be much larger than one might otherwise expect. They have the potential to contribute a non-scale invariant and non-Gaussian component to the primordial spectrum of perturbations, and might be observable.

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