Bulletin of the American Physical Society
APS April Meeting 2022
Volume 67, Number 6
Saturday–Tuesday, April 9–12, 2022; New York
Session K01: 50 years of Black Hole EntropyInvited Live Streamed
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Sponsoring Units: DGRAV Chair: Jorge Pullin, Louisiana State University Room: Broadway North |
Sunday, April 10, 2022 1:30PM - 2:06PM |
K01.00001: Black Holes, Thermodynamics, and Entropy Invited Speaker: Robert D Wald TBD |
Sunday, April 10, 2022 2:06PM - 2:42PM |
K01.00002: A Spacetime View of Entropy: From Black Holes to Holography Invited Speaker: Matthew Headrick It was 50 years ago that Bekenstein first posited the generalized second law and the idea that a black hole carries an entropy proportional to its horizon area. Since then, we have learned that the connection between areas and entropies is not restricted to black holes, but rather is a general feature of quantum gravity appearing in many guises. Indeed, this connection extends in a sense even to non-gravitational quantum field theories and quantum many-body systems. I will review some of this history and our current, still incomplete understanding of entropy in quantum gravity, with a particular focus on the class of theories that we understand the best, namely the holographic ones, and the area-entropy connection discovered there by Ryu-Takayanagi. |
Sunday, April 10, 2022 2:42PM - 3:18PM |
K01.00003: A View From String, Soft Hair and All That Fuzz Invited Speaker: Andrea Puhm Black holes provide an ideal playground for attempting to unmask the secrets of quantum gravity. Understanding the statistical origin of black hole entropy in terms of its microstates and how this information gets encoded in radiation as the black hole evaporates is central to this endeavor. I will highlight aspects of this problem and some of the successes in the context of string theory and the holographic principle for Anti de Sitter space before discussing new avenues that attempt to formulate a holographic principle for quantum gravity in asymptotically flat space relevant for describing the black holes in our universe. |
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