PIRSA:14120032

Testing the membrane paradigm with holography

Heller, M. (2014). Testing the membrane paradigm with holography. Perimeter Institute. https://pirsa.org/14120032

Heller, Michal. Testing the membrane paradigm with holography. Perimeter Institute, Dec. 04, 2014, https://pirsa.org/14120032 

          @misc{ pirsa_PIRSA:14120032,
            doi = {10.48660/14120032},
            url = {https://pirsa.org/14120032},
            author = {Heller, Michal},
            keywords = {Strong Gravity},
            language = {en},
            title = {Testing the membrane paradigm with holography},
            publisher = {Perimeter Institute},
            year = {2014},
            month = {dec},
            note = {PIRSA:14120032 see, \url{https://pirsa.org}}
          }

Michal Heller

Ghent University

Talk number
PIRSA:14120032
Collection
Talk Type
Subject
Abstract

One version of the membrane paradigm states that as far as outside observers are concerned, black holes can be replaced by a dissipative membrane with simple physical properties located at the stretched horizon. We demonstrate that such a membrane paradigm is incomplete in several aspects. We argue that it generically fails to capture the massive quasinormal modes, unless we replace the stretched horizon by the exact event horizon, and illustrate this with a scalar field in a BTZ black hole background. We also consider as a concrete example linearized metric perturbations of a five-dimensional AdS-Schwarzschild black brane and show that a spurious excitation appears in the long-wavelength response that is only removed from the spectrum when the membrane paradigm is replaced by ingoing boundary conditions at the event horizon. We interpret this excitation in terms of an additional Goldstone boson that appears due to symmetry breaking by the classical solution ending on the stretched horizon rather than the event horizon.

Based on arXiv:1405.4243