The fermion self-energy during inflation

S. P. Miao, R. P. Woodard

Research output: Contribution to journalArticlepeer-review

85 Citations (Scopus)

Abstract

We compute the one-loop fermion self-energy for massless Dirac + Einstein in the presence of a locally de Sitter background. We employ dimensional regularization and obtain a fully renormalized result by absorbing all divergences with BPHZ counterterms. An interesting technical aspect of this computation is the need for a noninvariant counterterm owing to the breaking of de Sitter invariance by our gauge condition. Our result can be used in the quantum-corrected Dirac equation to search for inflation-enhanced quantum effects from gravitons, analogous to those which have been found for massless, minimally coupled scalars.

Original languageEnglish
Pages (from-to)1721-1761
Number of pages41
JournalClassical and Quantum Gravity
Volume23
Issue number5
DOIs
Publication statusPublished - 2006 Mar 7

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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