ICTS:29452

Video URL

Looking at extremal black holes from very far away

Looking at extremal black holes from very far away

(2024). Looking at extremal black holes from very far away. SciVideos. https://youtu.be/kMcVpjrT5hI

Looking at extremal black holes from very far away. SciVideos, Aug. 29, 2024, https://youtu.be/kMcVpjrT5hI 

          @misc{ scivideos_ICTS:29452,
            doi = {},
            url = {https://youtu.be/kMcVpjrT5hI},
            author = {},
            keywords = {},
            language = {en},
            title = {Looking at extremal black holes from very far away},
            publisher = {},
            year = {2024},
            month = {aug},
            note = {ICTS:29452 see, \url{https://scivideos.org/icts-tifr/29452}}
          }
Mukund Rangamani
Talk numberICTS:29452
Source RepositoryICTS-TIFR
Source EventQuantum Information, Quantum Field Theory and Gravity
Collection

Abstract

We have now come to understand that extremal black holes are like ordinary quantum systems with a few degrees of freedom, and no macroscopic degeneracy. The classical black hole entropy receives quantum corrections, from collective modes localized in the near-horizon region, that lowers the density of states. I will describe an alternate perspective on these quantum effects, focusing on the entire spacetime. Specifically, I will argue that the near-extremal black holes support a set of low-lying gapless modes which are responsible for this suppression of the degeneracy at low temperatures.