Choose timezone
Your profile timezone:
Description
We discuss a holographic approach to describing cosmological physics. The cosmological spacetime is encoded in a special state of a four-dimensional quantum field theory that is not conventionally holographic. The state is produced via a Euclidean path integral that includes a three-dimensional holographic theory at a boundary in the Euclidean past. The same Euclidean path integral can be used to define a dual static spacetime, and the many of the observables in the cosmology are equivalent to vacuum observables in the static spacetime. This duality has interesting consequences, for example it gives a simple explanation for correlations between regions of the universe that apparently were never in causal contact. The model gives an effective field theory whose fundamental constant that is negative, but generically will have a phase of accelerated expansion via a rolling scalar.
TH colloquia
Zoom Meeting ID
67346292748
Host
Elena Gianolio
Alternative hosts
Zoom Recording Operations 2, Irene Valenzuela Agui, Benoit Loyer, Clement Montcharmont, Shota Komatsu, Pascal Pignereau, Pier Francesco Monni, John Cassar, AVC support account, Thomas Nik Bazl Fard
Passcode
80279029
Useful links
Join via phone
Zoom URL
