About
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. .
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The talk
Credits and licence
- Institution
- CERN
- Department
- Theory Colloquia
- Speaker
- Mark Van Raamsdonk
- Year
- 2022
- Language
- English
- Subjects
- Physics, Astronomy and space
- Source
- CERN
- Licence
- CERN, as CERN states it. CERN's terms
- Attribution
- © CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
- Who can watch
- CERN gives no rating. Invisible Network shows it to Tweens profiles and older, judged from what the source says about it. How courses are placed