The goal of this thesis is to obtain and study new black hole solutions, both with and without supersymmetry, with a particular focus on multi-centered black holes in a cosmological background. After a review of matter-coupled N=2 gauged supergravity in four dimensions and of the classification of its supersymmetric solutions, a new supersymmetric black hole solution is obtained, which is the first with nontrivial running hyperscalars. Fake supergravity is a framework that allows to apply the methods used to classify supersymmetric solutions of supergravity also to theories without supersymmetry. A classification of fake supersymmetric solutions of a theory related to N=2, d=4 gauged supergravity is reviewed and used to construct dynamical solutions representing multiple black holes in a Friedmann-Lemaître-Robertson-Walker background. The physical properties of the single-centered case are then studied in some detail. More complicated solutions with rotation and NUT-charge, or with curved spatial slices, are obtained for a less general class of theories. Finally a recipe to obtain multi-centered black holes in an arbitrary FLRW universe and in arbitrary dimension is presented. These spacetimes are a multi-centered generalization of the charged McVittie black hole and are sourced by a U(1) gauge field and by a charged perfect fluid. As a particular subcase, these solutions describe an arbitrary number of black holes in a background that is locally anti-de Sitter space in cosmological coordinates. Some physical properties of the single-centered asymptotically AdS black hole are studied, showing in particular that a generalized first law of black hole dynamics is satisfied.

BLACK HOLE DYNAMICS IN GENUINE AND FAKE GAUGED SUPERGRAVITY / S. Chimento ; tutor: D. Klemm ; coordinatore: M. Bersanelli. DIPARTIMENTO DI FISICA, 2015 Jan 28. 27. ciclo, Anno Accademico 2014. [10.13130/chimento-samuele_phd2015-01-28].

BLACK HOLE DYNAMICS IN GENUINE AND FAKE GAUGED SUPERGRAVITY

S. Chimento
2015

Abstract

The goal of this thesis is to obtain and study new black hole solutions, both with and without supersymmetry, with a particular focus on multi-centered black holes in a cosmological background. After a review of matter-coupled N=2 gauged supergravity in four dimensions and of the classification of its supersymmetric solutions, a new supersymmetric black hole solution is obtained, which is the first with nontrivial running hyperscalars. Fake supergravity is a framework that allows to apply the methods used to classify supersymmetric solutions of supergravity also to theories without supersymmetry. A classification of fake supersymmetric solutions of a theory related to N=2, d=4 gauged supergravity is reviewed and used to construct dynamical solutions representing multiple black holes in a Friedmann-Lemaître-Robertson-Walker background. The physical properties of the single-centered case are then studied in some detail. More complicated solutions with rotation and NUT-charge, or with curved spatial slices, are obtained for a less general class of theories. Finally a recipe to obtain multi-centered black holes in an arbitrary FLRW universe and in arbitrary dimension is presented. These spacetimes are a multi-centered generalization of the charged McVittie black hole and are sourced by a U(1) gauge field and by a charged perfect fluid. As a particular subcase, these solutions describe an arbitrary number of black holes in a background that is locally anti-de Sitter space in cosmological coordinates. Some physical properties of the single-centered asymptotically AdS black hole are studied, showing in particular that a generalized first law of black hole dynamics is satisfied.
28-gen-2015
Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici
black holes in string theories; black holes; supergravity models; classical theories of gravity; gauge-gravity correspondence
KLEMM, DIETMAR
BERSANELLI, MARCO RINALDO FEDELE
Doctoral Thesis
BLACK HOLE DYNAMICS IN GENUINE AND FAKE GAUGED SUPERGRAVITY / S. Chimento ; tutor: D. Klemm ; coordinatore: M. Bersanelli. DIPARTIMENTO DI FISICA, 2015 Jan 28. 27. ciclo, Anno Accademico 2014. [10.13130/chimento-samuele_phd2015-01-28].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/259452
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