Esta tesis de doctorado se dedica al estudio de los agujeros negros de supergravedad N=2 en cuatro dimensiones. Se concentra principalmente en el ánalisis de soluciones no supersimétricas, extremas y no extremas, a un solo centro o a multi-centro. Se han utilizado y profundizado nociones importantes como el formalismo de primer orden y el formalismo H-FGK. Se han encontrado nuevas soluciones de agujero negro y nuevas simetrías entre las variables del sistemas.This doctoral thesis contains a thorough study of the non-supersymmetric branch of supergravity black holes arising in four-dimensional N=2 theories interacting with abelian vector and scalar fields. It addresses the problem of describing supersymmetric and non supersymmetric, both extremal (also multicentre) and non extremal solutions with a similar formalism, based on first order dynamical equations driven by a superpotential. The new perspective provided by the so called H-FGK formalism and its outcomes are extensively discussed and proposed  as a unifying framework

Galli, Pietro

This doctoral thesis contains a thorough study of the non-supersymmetric branch of supergravity black holes arising in four-dimensional N=2 theories interacting with abelian vector and scalar fields. It addresses the problem of describing supersymmetric and non supersymmetric, both extremal (also multicentre) and non extremal solutions with a similar formalism, based on first order dynamical equations driven by a superpotential. The new perspective provided by the so called H-FGK formalism and its outcomes are extensively discussed and proposed  as a unifying framework.Esta tesis de doctorado se dedica al estudio de los agujeros negros de supergravedad N=2 en cuatro dimensiones. Se concentra principalmente en el ánalisis de soluciones no supersimétricas, extremas y no extremas, a un solo centro o a multi-centro. Se han utilizado y profundizado nociones importantes como el formalismo de primer orden y el formalismo H-FGK. Se han encontrado nuevas soluciones de agujero negro y nuevas simetrías entre las variables del sistemas

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Non-supersymmetric black-hole solutions in N=2,D=4 supergravity

254 páginas. Tesis Doctoral del Departamento de Física Teórica, de la Universidad de Valencia.Black holes have always been intriguing objects able, since their conception, to charm the curious mind of people from many dierent disciplines. Lots of works of unrelated nature took inspiration from these celestial bodies which trap and hide everything behind a black curtain that external observers will never unveil. The presence of a surface of no return, the theoretical prevision of wormholes and the speculative idea of parallel universes made black holes attractive to the public at least as much as their gravitational strength. From a scientic point of view, black holes are important for several reasons. First of all, it is nowadays widely accepted that they do exist and that they are not a merely theoretical solution of some equations. Indirect observations, like the study of the eects on the surrounding stars or the de ection of light due to strong gravity, indicate their presence in the center of most galaxies, including ours. The formation of black holes could be dated back to the Big Bang or, as most cosmologists believe, related with the gravitational collapse of massive stars. In either case, their study may provide useful insights about the origin (or the end in the case of the Big Crunch) of our universe and help in understanding the other giant astronomical objects populating the cosmos. Besides, black holes are interesting by their own since represent a special status of the matter where, supposedly, the Pauli-exclusion principle is violated and where the laws of nature are completely dierent from anywhere else in our world. In addition, from a more theoretical perspective, black-hole solutions of a theory of quantum gravity can be used as a test of the theory itself. Their thermodynamical description, for example, is an important playground that can be explored, and should be compatible, at both macroscopic and microscopic level. At the same time black-hole geometries appear also in gauge/gravity dualities (AdS/CFT correspondence) relevant in the study of several dierent elds like condensed matter systems or QCD. At the end, for all these reasons and more, it is not a case if black holes are thought so important to be considered \the harmonic oscillator of the 21st century> 

Non-supersymmetric black-hole solutions in N=2,D=4 supergravity

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