Gravitons Enhance Fermions during Inflation

Details Gravitons Enhance Fermions during Inflation Gravitons Enhance Fermions during Inflation

2006-03-31

arxiv.org/abs/gr-qc/0603135v3

Phys.Rev.D74:024021,2006

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

31 pages, Latex 2epsilon, 1 figure, version 3 has updated references

Scientific paper

10.1103/PhysRevD.74.024021

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 Z_2(t) = 1 - \frac{17}{4 \pi} G H^2 \ln(a) + O(G^2). We show that this also follows from making the Hartree approximation, although the numerical coefficients differ.

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