The fermion self-energy during inflation

Shun-Pei Miao, R. P. Woodard

Research output: Contribution to journalArticle

82 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

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gravitons
Dirac equation
invariance
divergence
fermions
scalars
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Miao, Shun-Pei ; Woodard, R. P. / The fermion self-energy during inflation. In: Classical and Quantum Gravity. 2006 ; Vol. 23, No. 5. pp. 1721-1761.
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The fermion self-energy during inflation. / Miao, Shun-Pei; Woodard, R. P.

In: Classical and Quantum Gravity, Vol. 23, No. 5, 07.03.2006, p. 1721-1761.

Research output: Contribution to journalArticle

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