We study closed universes in simple models of two dimensional gravity, such as Jackiw-Teiteilboim (JT) gravity coupled to matter, and a toy topological model that captures the key features of the former. We find there is a stark contrast between the perturbative and non-perturbative aspects of the theory. Semi-classically there is rich physics. However, when non-perturbative effects are included we see the puzzling feature that there is a unique closed universe state in each theory.
| Building: | Randall Laboratory |
|---|---|
| Event Type: | Lecture / Discussion |
| Tags: | brown bag, Brown Bag Seminar, Physics |
| Source: | Happening @ Michigan from Leinweber Center for Theoretical Physics, Department of Physics, HET Brown Bag Series, Leinweber Center for Theoretical Physics Seminars, Leinweber Center for Theoretical Physics Brown Bag Seminars |
Events
Featured
Oct
08
2025 Ta-You Wu Lecture in Physics | Einstein, Gravitational Waves, Black Holes and Other Matters
Gabriela González, Boyd Professor of Physics (Louisiana State University)
4:00 PM
Fourth Floor Ampitheatre
Rackham Graduate School (Horace H.)
Upcoming
Sep
10
Department Colloquium
Aaron Roodman (SLAC)
3:00 PM
340
West Hall
Sep
11
Quantum Research Institute | TBD
TBD
11:00 AM
2000PML
Virtual
Sep
25
Mohammad Hafezi (University of Maryland)
TBD
11:00 AM
411
Virtual
