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Gravitational Particle Production in Gravity Theories with Non-minimal Derivative Couplings

We study the gravitational production of heavy X-particles of mass of the order of the inflaton mass, produced after the end of inflation. We find that, in the presence of a derivative coupling of the inflaton field or of the X-field to the Einstein tensor, the number of gravitationally produced particles is suppressed as the strength of the coupling is increased.

preprint2013arXivOpen access
George KoutsoumbasKonstantinos NtrekisEleftherios Papantonopoulos
gr-qchep-th
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George KoutsoumbasKonstantinos NtrekisEleftherios Papantonopoulos

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