Séminaire / Seminar GReCO |
| « Rollercoaster cosmology, and a gravity wave factory » |
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Guido D'Amico |
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Does inflation have to happen all in one go? The answer is no!
All cosmological problems can be solved by a sequence of bursts of cosmic acceleration, interrupted by short epochs of decelerated expansion. In this rollercoaster cosmology, models that seem excluded for a single long stage become viable again, and high-scale inflation is more natural. At the same time, we expect interesting predictions at several different length scales, such as gravitational wave signals potentially detectable by LISA. I will describe the general framework, and focus on a realization with two stages of monodromy inflation. |
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lundi 31 mai 2021 - 11:00 Webinaire Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |