Physikalisches Kolloquium

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Kirchhoff-Institut für Physik, Otto-Haxel-Hörsaal
Friday 17:15

12.5.2023 17:00
Prof. Dr. Costas Bachas, École Normale Supérieure, Paris, and CERN
KIP, INF 227, Hörsaal 1

Ever since Hawking's discovery that quantum black holes radiate, a microscopic understanding of this phenomenon has been a litmus test for a consistent theory of quantum gravity. An idea that has transformed the field, and occupied center stage during the past two decades, is to consider the black hole horizon as a holographic screen on which the black hole interior is recorded. In its precise formulation, known as AdS/CFT correspondence, the book-keeping device is a local quantum field theory similar in nature to the familiar quantum electrodynamics. In the first part of the talk I will describe these far-reaching ideas. As an application, I will then explain how AdS/CFT correspondence might help answer a long-standing theoretical question: can there exist more than one gravitons?