Seminar detail: A Multiverse Outside of the Swampland

Date&Time	Tue Dec 10 2024 (17:00 - 18:00)
Speaker	Gabriele Rigo
Affiliation	Institute of Theoretical Physics, Saclay
Title	A Multiverse Outside of the Swampland
Abstract	A Multiverse can arise from landscapes without de Sitter minima. It can be populated during a period of eternal inflation without trans-Planckian field excursions and without flat potentials. This Multiverse can explain the values of the cosmological constant and of the weak scale. In the process of proving these statements I derive a few simple, but counter-intuitive results. I show that it is easy to write models of eternal inflation compatible with the distance and refined de Sitter conjectures. Secondly, tunneling transitions that move fields from a lower-energy vacuum to a higher-energy vacuum and generate baby Universes are possible, and occur during eternal inflation. Finally, I relax the assumption of no de Sitter minima and show that this more standard Multiverse can be populated by Coleman-De Luccia transitions in about 100 e-folds of inflation.
Remarks	online seminar
Slide/Video