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A graviton propagator for inflation

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Publication:5454614

DOI10.1088/0264-9381/25/5/055007zbMATH Open1136.83040arXiv0707.3919OpenAlexW2036470612MaRDI QIDQ5454614

Author name not available (Why is that?)

Publication date: 31 March 2008

Published in: (Search for Journal in Brave)

Abstract: We construct the scalar and graviton propagator in quasi de Sitter space up to first order in the slow roll parameter epsilonequiv−dotH/H2. After a rescaling, the propagators are similar to those in de Sitter space with an epsilon correction to the effective mass. The limit epsilono0 corresponds to the E(3) vacuum that breaks de Sitter symmetry, but does not break spatial isotropy and homogeneity. The new propagators allow for a self-consistent, dynamical study of quantum back-reaction effects during inflation.


Full work available at URL: https://arxiv.org/abs/0707.3919




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