S P Miao and R P Woodard 2006 Class. Quantum Grav. 23 1721 doi:10.1088/0264-9381/23/5/016
S P Miao and R P Woodard
Show affiliationsWe 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.
04.60.Pp Loop quantum gravity, quantum geometry, spin foams
04.20.Fy Canonical formalism, Lagrangians, and variational principles
83C05 Einstein's equations (general structure, canonical formalism, Cauchy problems)
Issue 5 (7 March 2006)
Received 29 November 2005, in final form 16 January 2006
Published 20 February 2006
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