PIRSA:22040116

Rollercoaster Cosmology, and a Gravity Wave Factory

APA

D'Amico, G. (2022). Rollercoaster Cosmology, and a Gravity Wave Factory. Perimeter Institute. https://pirsa.org/22040116

MLA

D'Amico, Guido. Rollercoaster Cosmology, and a Gravity Wave Factory. Perimeter Institute, Apr. 12, 2022, https://pirsa.org/22040116

BibTex

          @misc{ pirsa_22040116,
            doi = {},
            url = {https://pirsa.org/22040116},
            author = {D{\textquoteright}Amico, Guido},
            keywords = {Cosmology},
            language = {en},
            title = {Rollercoaster Cosmology, and a Gravity Wave Factory},
            publisher = {Perimeter Institute},
            year = {2022},
            month = {apr},
            note = {PIRSA:22040116 see, \url{https://pirsa.org}}
          }
          

Abstract

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.

Zoom Link: https://pitp.zoom.us/j/99206384855?pwd=dUpDdWVxV1lXc0g1bU9uZ2lrMzVXUT09