Fermion Mass Generation in de Sitter Space

Details Fermion Mass Generation in de Sitter Space Fermion Mass Generation in de Sitter Space

2006-02-02

arxiv.org/abs/gr-qc/0602011v1

Phys.Rev. D73 (2006) 064036

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

17 pages, 3 figures, LaTeX

Scientific paper

10.1103/PhysRevD.73.064036

We study the one-loop radiative corrections for massless fermions in de Sitter space induced by a Yukawa coupling to a light, nearly minimally coupled scalar field. We show that the fermions acquire a mass. Next we construct the corresponding (nonlocal) effective fermionic action, which -- in contrast to the case of a massive Dirac fermion -- preserves chirality. Nevertheless, the resulting fermion dynamics is precisely that of a Dirac fermion with a mass proportional to the expansion rate. Our finding supports the view that an observer or a test particle responds to a scalar field in inflation by shifting its energy rather than seeing a thermal bath.

Affiliated with

Also associated with

No associations

Rating

Fermion Mass Generation in de Sitter Space does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Fermion Mass Generation in de Sitter Space, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fermion Mass Generation in de Sitter Space will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-122932