Reheating of the universe after inflation with f(phi)R gravity

Details Reheating of the universe after inflation with f(phi)R gravity Reheating of the universe after inflation with f(phi)R gravity

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aps..tsf.j5005w&link_type=abstract

American Physical Society, 2007 Joint Fall Meeting of the Texas Sections of the APS and AAPT; Zone 13 of SPS, October 18-20, 200

Physics

Scientific paper

We show that reheating of the universe occurs spontaneously in a broad class of inflation models with f(φ)R gravity (φ is inflaton). The model does not require explicit couplings between φ and bosonic or fermionic matter fields. The couplings arise spontaneously when φ settles in the vacuum expectation value (vev) and oscillates, with coupling constants given by derivatives of f(φ) at the vev and the mass of resulting bosonic or fermionic fields. This mechanism allows inflaton quanta to decay into any fields which are not conformally invariant in f(φ)R gravity theories.

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