In the near-decoupling limit, the scalar quasinormal mode spectrum of GMS microstate geometries is reproduced exactly by D1-D5 orbifold CFT emission amplitudes, including the slow-decaying ERS modes.
Modave Lectures on Fuzzballs and Emission from the D1-D5 System
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abstract
These lecture notes present an introduction to the fuzzball proposal and emission from the D1-D5 system which is geared to an audience of graduate students and others with little background in the subject. The presentation begins with a discussion of the Penrose process and Hawking radiation. The fuzzball proposal is then introduced, and the two- and three-charge systems are reviewed. In the three-charge case details are not discussed. A detailed discussion of emission calculations for D1-D5-P black holes and for certain non-extremal fuzzballs from both the gravity and CFT perspectives is included. We explicitly demonstrate how seemingly different emission processes in gravity, namely, Hawking radiation and superradiance from D1-D5-P black holes, and ergoregion emission from certain non-extremal fuzzballs, are only different manifestations of the same phenomenon in the CFT.
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Quasinormal modes of supersymmetric microstate geometries from the D1-D5 CFT
In the near-decoupling limit, the scalar quasinormal mode spectrum of GMS microstate geometries is reproduced exactly by D1-D5 orbifold CFT emission amplitudes, including the slow-decaying ERS modes.