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7 papers found.
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Non-renormalization for non-supersymmetric black holes

We analyze large logarithmic corrections to 4D black hole entropy and relate them to the Weyl anomaly. We use duality to show that counter-terms in EinsteinMaxwell theory can be expressed in terms of geometry alone, with no dependence on matter terms. We analyze the two known \( \mathcal{N} \) = 2 supersymmetric invariants for various non-supersymmetric black holes and find that ...

Conceptual Aspects of Gauge/Gravity Duality

We give an introductory review of gauge/gravity duality, and associated ideas of holography, emphasising the conceptual aspects. The opening sections gather the ingredients, viz. anti-de Sitter spacetime, conformal field theory and string theory, that we need for presenting, in Sect. 5, the central and original example: Maldacena’s AdS/CFT correspondence. Sections 6 and 7 develop ...

Tunneling into microstate geometries: quantum effects stop gravitational collapse

Collapsing shells form horizons, and when the curvature is small classical general relativity is believed to describe this process arbitrarily well. On the other hand, quantum information theory based (fuzzball/firewall) arguments suggest the existence of some structure at the black hole horizon. This structure can only form if classical general relativity stops being the correct ...

Structure of six-dimensional microstate geometries

Lange, Daniel R. Mayerson and Bert Vercnocke 3 Open Access , c The Authors We investigate the structure of smooth and horizonless microstate geometries in six dimensions, in the spirit of the five

Multi-centered D1-D5 solutions at finite B-moduli

We study the fate of two-centered D1-D5 systems on T 4 away from the singular supergravity point in the moduli space. We do this by considering a background D1-D5 black hole with a self-dual B-field moduli turned on and treating the second center in the probe limit in this background. We find that in general marginal bound states at zero moduli become metastable at finite B-moduli, ...

Higher derivative corrections and central charges from wrapped M5-branes

We compute four-derivative corrections to the AdS supergravity actions arising from the near-horizon geometry of N M5-branes wrapped on either one or two Riemann surfaces. This setup features the novel presence of both gauged isometries as well as nontrivial hypermultiplets. We argue that the 5d Chern-Simons terms receive not only higher-derivative corrections but also ...

Phases of non-extremal multi-centered bound states

We investigate the phase space of multi-centered near-extremal configurations previously studied in arXiv:​1108.​5821 [1] and arXiv:​1110.​5641 [2] in the probe limit. We confirm that in general the energetically favored ground state of the multi-center potential, which can be a single or multi-center configuration, has the most entropy and is thus thermodynamically stable. ...