Reheating Of The Universe After Inflation With f(φ)R Gravity

Details Reheating Of The Universe After Inflation With f(φ)R Gravity Reheating Of The Universe After Inflation With f(φ)R Gravity

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.9102w&link_type=abstract

American Astronomical Society, AAS Meeting #211, #91.02; Bulletin of the American Astronomical Society, Vol. 39, p.883

Astronomy and Astrophysics

Astronomy

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.
E.K. acknowledges support from the Alfred P. Sloan Foundation.

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