Found 4 result(s)

### 05.06.2019 (Wednesday)

#### BlackholesinN=4Super-Yang-Mills

Regular Seminar Francesco au:Benini'><span class='hl'>Francesco</span> Benini (SISSA)

 at: 14:00 ICroom H503 abstract: AdS/CFT provides a consistent non-perturbative definition of quantum gravity in asymptotically AdS space. Black holes should correspond to ensembles of states in the boundary field theory. By analyzing the superconformal index of 4d N=4 SU(N) Super-Yang-Mills, with the help of a new Bethe Ansatz type formula, we are able to exactly reproduce the Bekenstein-Hawking entropy of BPS black holes in AdS5 x S5. The large N limit exhibits many competing contributions and Stokes phenomena, hinting at new physics.

### 10.04.2019 (Wednesday)

#### BlackholesinN=4Super-Yang-Mills

Regular Seminar Francesco au:Benini'><span class='hl'>Francesco</span> Benini (SISSA, Trieste)

 at: 13:15 KCLroom S2.49 abstract: AdS/CFT provides a consistent non-perturbative definition of quantum gravity in asymptotically AdS space. Black holes should correspond to ensembles of states in the boundary field theory. By analyzing the superconformal index of 4d N=4 SU(N) Super-Yang-Mills, with the help of a new Bethe Ansatz type formula, we are able to exactly reproduce the Bekenstein-Hawking entropy of BPS black holes in AdS5 x S5. The large N limit exhibits many competing contributions and Stokes phenomena, hinting at new physics.

### 25.11.2015 (Wednesday)

Regular Seminar Francesco au:Benini'><span class='hl'>Francesco</span> Benini (Imperial College)

 at: 13:15 KCLroom S0.13 abstract: One of the great successes of string theory, as a theory of quantum gravity, is the explanation of the entropy of asymptotically-flat black holes. I will present, instead, a counting of the microstates of certain black holes in AdS4. The black holes have an holographic description as RG flows from a 3D CFT to superconformal quantum mechanics, and the counting of microstates proceeds via supersymmetric localization. Along the way, we will define and compute an index for topologically twisted theories, and propose an extremization principle to determine the superconformal R-symmetry in quantum mechanics.