https://doi.org/10.1140/epjc/s10052-019-7037-4
Regular Article - Theoretical Physics
Clockwork inflation with non-minimal coupling
1
Department of Physics and IPAP, Yonsei University, Seoul, 03722, South Korea
2
Center for Theoretical Physics of the Universe, IBS, Daejeon, 34051, South Korea
* e-mail: csshin@ibs.re.kr
Received:
13
February
2019
Accepted:
10
June
2019
Published online:
20
June
2019
We suggest a clockwork mechanism for a Higgs-like inflation with the non-minimal coupling term 
. The seemingly unnatural ratio of parameters, 
of the self quartic coupling of the inflaton, 
, and the non-minimal coupling, 
, is understood by exponential suppression of by the clockwork mechanism, instead of a large non-minimal coupling. The portal interaction between the inflaton and the Standard Model (SM) Higgs doublet is introduced as a source of reheating and the inflaton mass. Successful realization of inflation requires that the inflaton gets a mass around (sub) GeV scale, which would lead to observable consequences depending on reheating process and its lifetime.
© The Author(s), 2019
