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9 papers · 2 filters
Holography, degenerate horizons and entropy
Diego J. Navarro, Jose Navarro-Salas, Pedro Navarro
We show that a realization of the correspondence AdS_2/CFT_1 for near extremal Reissner-Nordstrom black holes in arbitrary dimensional Einstein-Maxwell gravity exactly reproduces,…
Cohomological analysis of gauged-fixed gauge theories
Glenn Barnich, Marc Henneaux, Tobias Hurth +1
The relation between the gauge-invariant local BRST cohomology involving the antifields and the gauge-fixed BRST cohomology is clarified. It is shown in particular that the cocycle…
AdS/CFT correspondence and near-extremal black hole entropy
J. Navarro-Salas, P. Navarro
We provide a realization of the AdS/CFT correspondence in terms of asymptotic symmetries of the AdSS and AdSS geometries arising in near-extrema…
Integrable models and degenerate horizons in two-dimensional gravity
J. Cruz, A. Fabbri, D. J. Navarro +1
We analyse an integrable model of two-dimensional gravity which can be reduced to a pair of Liouville fields in conformal gauge. Its general solution represents a pair of ``mirror'…
The geometry of branes and extended superspaces
C. Chryssomalakos, J. A. de Azcárraga, J. M. Izquierdo +1
We argue that a description of supersymmetric extended objects from a unified geometric point of view requires an enlargement of superspace. To this aim we study in a systematic wa…
Virasoro Orbits, AdS_3 Quantum Gravity and Entropy
J. Navarro-Salas, P. Navarro
We analyse the canonical structure of AdS_3 gravity in terms of the coadjoint orbits of the Virasoro group. There is one subset of orbits, associated to BTZ black hole solutions, t…