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52. An SLE approach to four dimensional black hole microstate entropy

Author

Paolo Benincasa and Nampuri, Suresh

Subjects
High Energy Physics - Theory, High Energy Physics::Theory, General Relativity and Quantum Cosmology, High Energy Physics - Theory (hep-th), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Mathematical Physics (math-ph), Mathematical Physics
Abstract

In this note, we model the Bekenstein-Hawking entropy of a four dimensional extremal black hole in terms of classifying particles moving in its near horizon AdS_2 geometry. We use the framework of SLE curves in AdS_2 to classify these particle trajectories in terms of their boundary conditions. These turn out to be related to singular vectors in two-dimensional conformal quantum gravity theory in AdS_2 and the dynamics of these particles are governed by the Hamiltonians of the integrable Calogero-like models, for these boundary conditions. We use this classification to count the leading order Bekenstein-Hawking entropy of the black hole and arrive at a first principle microscopic computation of black hole degeneracy., 31 pages, 3 figures

Published
2017

54. A Calogero formulation for four-dimensional black-hole microstates

Author

Lechtenfeld, Olaf, Nampuri, Suresh, Lechtenfeld, Olaf, and Nampuri, Suresh

Abstract

We extract the leading-order entropy of a four-dimensional extremal black hole in N=2N=2 ungauged supergravity by formulating the CFT1 that is holographically dual to its near-horizon AdS2 geometry, in terms of a rational Calogero model with a known counting formula for the degeneracy of states in its Hilbert space.

Published
2016

56. No entropy enigmas for N=4 dyons

Author

Dabholkar, Atish, Guica, Monica, Murthy, Sameer, Nampuri, Suresh, Laboratoire de Physique Théorique et Hautes Energies (LPTHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Dabholkar, Atish

Subjects
High Energy Physics - Theory, High Energy Physics::Theory, General Relativity and Quantum Cosmology, High Energy Physics - Theory (hep-th), [PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th], Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, FOS: Physical sciences, [PHYS.HTHE] Physics [physics]/High Energy Physics - Theory [hep-th]
Abstract

We explain why multi-centered black hole configurations where at least one of the centers is a large black hole do not contribute to the indexed degeneracies in theories with N=4 supersymmetry. This is a consequence of the fact that such configurations, although supersymmetric, belong to long supermultiplets. As a result, there is no entropy enigma in N=4 theories, unlike in N=2 theories., 14 pages

Published
2010

65. Forced fluid dynamics from gravity

Author

Bhattacharyya, Sayantani, primary, Loganayagam, R, additional, Minwalla, Shiraz, additional, Nampuri, Suresh, additional, Trivedi, Sandip P, additional, and Wadia, Spenta R, additional

Published
2009
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