Bulletin of the American Physical Society
APS April Meeting 2021
Volume 66, Number 5
Saturday–Tuesday, April 17–20, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session D01: Quantum Aspects of Black HolesInvited Live
|
Hide Abstracts |
Sponsoring Units: DGRAV Chair: Jorge Pullin, Louisiana State University |
Saturday, April 17, 2021 1:30PM - 2:06PM Live |
D01.00001: Consequences of No Global Symmetries in Quantum Gravity Invited Speaker: Thomas Rudelius Global symmetries play a crucial role in quantum field theory, but many lines of evidence suggest that exact global symmetries are not allowed in a consistent theory of quantum gravity. As a result, any would-be global symmetry of a low-energy effective field theory must be either gauged or broken upon coupling the theory to gravity. In this talk, we will see how many familiar phenomena from string theory, the AdS/CFT correspondence, and particle physics can be understood as consequences of gauging or breaking global symmetries in quantum gravity. [Preview Abstract] |
Saturday, April 17, 2021 2:06PM - 2:42PM Live |
D01.00002: Simple Subsets of the Black Hole Interior Invited Speaker: Netta Engelhardt Hawking radiation is notoriously difficult to decode. It has been often speculated that not just Hawking modes but more generally local operators anywhere inside a black hole have high computational complexity in the dual CFT. Using the characteristic initial value problem in the bulk, I will argue that some parts of the black hole interior are simple to decode: that is, there are local operators in the black hole interior that are simply reconstructible in the CFT; in fact, any local operator that lives between the event horizon and a certain type of outermost marginally trapped surface will be simple. Complex operators are constrained to the region behind the outermost marginally trapped (or extremal) surface, which I will argue by consistency of the holographic dictionary (not assuming cosmic censorship) must lie behind an event horizon. [Preview Abstract] |
Saturday, April 17, 2021 2:42PM - 3:18PM Live |
D01.00003: Life Without Pythons Would be so Simple Invited Speaker: Geoff Penington We prove that all bulk operators that lie between the outermost extremal surface and the asymptotic boundary admit a simple boundary reconstruction in the classical limit. This is the converse of the Python's lunch conjecture, which proposes that operators with support between the minimal and outermost (quantum) extremal surfaces - e.g. the interior Hawking partners - are highly complex. Our procedure for reconstructing this "simple wedge" is based on the HKLL construction, but uses causal bulk propagation of perturbed boundary conditions on Lorentzian timefolds to expand the causal wedge as far as the outermost extremal surface. As a corollary, we prove the Simple Entropy proposal for the holographic dual of the area of a marginally trapped surface, and introduce a similar holographic dual for the outermost extremal surface. [Preview Abstract] |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700