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 par...
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| Veröffentlicht in: | Journal of cosmology and astroparticle physics 2013-08, Vol.2013 (8), p.1-21 |
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| container_title | Journal of cosmology and astroparticle physics |
| container_volume | 2013 |
| creator | Koutsoumbas, George Ntrekis, Konstantinos Papantonopoulos, Eleftherios |
| description | 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. |
| doi_str_mv | 10.1088/1475-7516/2013/08/027 |
| format | Article |
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| ispartof | Journal of cosmology and astroparticle physics, 2013-08, Vol.2013 (8), p.1-21 |
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| language | eng |
| recordid | cdi_osti_scitechconnect_22282719 |
| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY COSMOLOGY Couplings Derivatives GRAVITATION Inflation INFLATIONARY UNIVERSE INFLATONS Joining MASS Mathematical analysis PARTICLE PRODUCTION TENSORS |
| title | Gravitational particle production in gravity theories with non-minimal derivative couplings |
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