Work

Quantum contributions to cosmological correlations. II. Can these corrections become large?

Year: 2006

Type: article

Abstract: This is a sequel to a previous detailed study of quantum corrections to cosmological correlations. It was found there that except in special cases these corrections depend on the whole history of inflation, not just on the behavior of fields at horizon exit. It is shown here that at least in perturbation theory these corrections can nevertheless not be proportional to positive powers of the Robertson-Walker scale factor, but only at most to powers of its logarithm, and are therefore never large.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.74.023508

Author: Steven Weinberg

Institution: The University of Texas at Austin

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Welch Foundation, U.S. Navy, Office of Naval Research

Awards: G1164111879, Research in the Quantum Field Theory of Elementary Particles, Quantum Field Theory of Elementary Particles