Speaker
Hao-Yang Jin
(Lancaster University)
Description
We investigate a model of quintessential inflation with a non-Abelian SU(2) gauge field, where the gauge kinetic function is modulated by the inflaton field. The backreaction onto the inflaton due to the gauge field yields a soft stiff period from the end of inflation to kination. This results in a characteristic gravitational wave spectrum that will be observable in the upcoming observations. We study the self-resonance of the gauge field, which may reheat the universe non-perturbatively.
| Other topic / keywords: | Inflation, quintessence, primodial gravitational waves |
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Authors
Hao-Yang Jin
(Lancaster University)
Konstantinos Dimopoulos