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hep-ph2020
Derivative couplings in gravitational production in the early universe
Daniel E. Borrajo Gutiérrez, Jose A. R. Cembranos, Luis J. Garay +1
Gravitational particle production in the early universe is due to the coupling of matter fields to curvature. This coupling may include derivative terms that modify the kinetic ter…
hep-ph2019★ 43 cited
Gravitational production of scalar dark matter
Jose A. R. Cembranos, Luis J. Garay, Jose M. Sánchez Velázquez
We investigate the gravitational production of scalar dark matter particles during the inflationary and reheating epochs. The oscillatory behavior of the curvature scalar durin…