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SUMMARY:Cosmology from vacuum physics
DTSTART;VALUE=DATE-TIME:20220224T150000Z
DTEND;VALUE=DATE-TIME:20220224T170000Z
DTSTAMP;VALUE=DATE-TIME:20220523T215252Z
UID:indico-event-1117997@indico.cern.ch
DESCRIPTION:We discuss a holographic approach to describing cosmological p
hysics. 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 sa
me 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 consequ
ences\, 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.\n\nhttps://indico.cern.ch/event/1117997/
LOCATION:CERN Zoom
URL:https://indico.cern.ch/event/1117997/
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