Gravitons enhance fermions during inflation

Shun-Pei Miao, R. P. Woodard

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

We solve the effective Dirac equation for massless fermions during inflation in the simplest gauge, including all one loop corrections from quantum gravity. At late times the result for a spatial plane wave behaves as if the classical solution were subjected to a time-dependent field strength renormalization of Z2(t)=1-174πGH2ln(a)+O(G2). We show that this also follows from making the Hartree approximation, although the numerical coefficients differ.

Original languageEnglish
Article number024021
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume74
Issue number2
DOIs
Publication statusPublished - 2006 Jul 27

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Quantum Gravity
gravitons
Dirac Equation
Classical Solution
Renormalization
Plane Wave
Inflation
Fermions
Gauge
fermions
Hartree approximation
Coefficient
Approximation
Dirac equation
field strength
plane waves
gravitation
coefficients

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

Cite this

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Gravitons enhance fermions during inflation. / Miao, Shun-Pei; Woodard, R. P.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 74, No. 2, 024021, 27.07.2006.

Research output: Contribution to journalArticle

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