ALVARO VELIZ University of Lisboa: We consider extremal solutions in four-dimensional N=2 gauged supergravity. The main focus is on solutions for which no AdS2 x R^2 horizon can be found, but that instead possess pathological near-horizon geometries. By adding quantum corrections, we show that a regular horizon develops; furthermore we show that these horizons correspond to black brane solutions with AdS4 asymptotics. Finally we develop the appropriate entropy function formalism to incorporate the effect of higher-curvature corrections on similar solutions.

DATA: 26-09-2013