3 papers
hep-ph2021
Reviving chaotic inflation with fermion production: a supergravity model
Michael A. Roberts, Lorenzo Sorbo
Processes of particle production during inflation can increase the amplitude of the scalar metric perturbations. We show that such a mechanism can naturally arise in supergravity m…
astro-ph.CO2019
Gravitational waves from fermion production during axion inflation
Peter Adshead, Lauren Pearce, Marco Peloso +2
We present analytic results for the gravitational wave power spectrum induced in models where the inflaton is coupled to a fermionic pseudocurrent. We show that although such a cou…
astro-ph.CO2018
Phenomenology of fermion production during axion inflation
Peter Adshead, Lauren Pearce, Marco Peloso +2
We study the production of fermions through a derivative coupling with a pseudoscalar inflaton and the effects of the produced fermions on the scalar primordial perturbations. We p…