Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Gauge/gravity duality"”.
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Topics in gauge/gravity duality
… and its generalization in the ideas of gauge/gravity duality have had a profound impact in our understanding of strongly interacting quantum field theories. Roughly speaking, the correspondence maps the degrees of freedom of a $d$-dimensional quantum field theory in the strong coupling …
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Topics in Gauge/Gravity Duality
The gauge theory/gravity correspondence encompasses a variety of di_erent specific dualities. We investigate various topics in the context of Super–Yang- Mills/type IIB string theory and superconformal Chern-Simons-matter/type IIA string theory dualities. We carry out a rather extensive study of …
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Entanglement in gauge/ gravity duality
… between entanglement in strongly coupled gauge theories and the geometry of their gravity duals. In the first, we find that in a certain class of time-dependent states which have a gravity dual in which a black hole forms, the entanglement entropy of large regions grows linearly in time, …
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Wilson loops effective theory and gauge-gravity duality
Esta tesis estudia cómo obtener una acción efectiva para el dual holográfico de líneas de Wilson en teorías de campos no conformes y fuertemente acopladas y algunas aplicaciones del mecanismo obtenido. Encontramos una acción efectiva para una cuerda dual a la línea de Wilson usando el mecanismo de …
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Nonperturbative dynamics of strong interactions from gauge/gravity duality
This thesis studies important dynamical observables of strong interactions such as form factors. It is known that Quantum Chromodynamics (QCD) is a theory which describes strong interactions. For large energies, one can apply perturbative techniques to solve some of the QCD problems. However, for …
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Aspects of strongly-coupled field theory from gauge-gravity duality
… is a hard problem in physics. The discovery of gauge-gravity duality at the end of the Twentieth Century provides a novel means of calculating in a large-N gauge theory at strong coupling. In this thesis we apply the method of gauge-gravity duality to a variety of questions. Firstly we review …
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Fermions at finite density in the nonrelativistic gauge/gravity duality
… and zero temperature in the nonrelativistic gauge/gravity duality. We find evidence of Fermi surfaces and investigate their properties. We show that the near-horizon scaling dimension, an important quantity that controls the low-energy excitations of the theory, depends on the momentum along …
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Gauge/Gravity Duality: Recovering the Bulk from the Boundary using AdS/CFT
Motivated by the holographic principle, within the context of the AdS/CFT Correspondence in the large t'Hooft limit, we investigate how the geometry of certain highly symmetric bulk spacetimes can be recovered given information of physical quantities in the dual boundary CFT. In particular, we use …
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Properties of mesons and quarks under extreme conditions from Gauge-Gravity duality
… live in the strongly coupled plasma of certain gauge theories which are similar to QCD. To study these plasmas we exploit gauge gravity duality which has been particularly useful for understanding QCD at temperatures above, but not far above, that at which quarks and gluons are deconfined. For …
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Aspects of SU(2|4) symmetric field theories and the Lin-Maldacena geometries
Gauge/gravity duality is an important tool for learning about strongly coupled gauge theories. This thesis explores a set of examples of this duality in which the field theories have SU(2|4) supersymmetry and discrete sets of vacuum solutions. Specifically, we use the duality to propose Lagrangian …
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Hot and dark matter
… coupled plasma of N = 4 SYM theory by using gauge/gravity duality, and for the weakly coupled QCD plasma by using perturbation theory. In the second part, we introduce two new dark matter reactions, called "semi-annihilation" and "assimilation". The semi-annihilation reaction takes the …
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Holography, large N, and supersymmetry on the lattice
<p>Lattice studies of strongly coupled gauge theories started with the pioneering work of Wilson. The success of lattice QCD since then has improved our understanding of strong dynamics, crucial for a proper understanding of many interesting phenomena in Physics. However, it is now known that the …
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On hadrons and inflatons: the holography of strongly coupled processes
… tackle such problems, arising from a new string duality that was discovered in the last years of the twentieth century. Gauge/gravity duality (or the AdS/CFT Correspondence) translates weakly coupled supergravity to strongly coupled gauge theory. The duality is holographic in that the field …
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Numerical Construction of Gravitational Solutions in Asymptotically Anti-de Sitter Spacetimes
… these spaces. Considerable motivation stems from gauge/gravity duality, which is a conjecture relating classical gravity with a negative cosmological constant to strongly coupled quantum field theories. In this dissertation, we present novel stationary, asymptotically AdS black hole and soliton …
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Aspects of transport in strongly correlated systems with gravity duals
… this thesis we consider various applications the gauge/gravity duality to study transport in strongly coupled systems. The main content is organized in three parts. In the first part we investigate the interrelation between dimensionality and strength of interactions. It is known that the dynamics …
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Disorder in holographic field theories: inhomogeneous geometries, momentum relaxation and SYK models
… translational symmetry. From the perspective of gravity, these theories translate to geometries that vary explicitly in the boundary space-like coordinates. We refer to these geometries as 'inhomogeneous' and investigate two approaches to study them. The first is motivated by the question: "what …
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Holography and strongly correlated systems
… we apply techniques arising from string theory - gauge-gravity/duality, or holography - to problems associated with strongly coupled quantum field theories under extreme conditions such as finite temperature or density. We first study a strongly coupled field theory at finite temperature. We …
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Stationary Anti-de Sitter Black Hole Solutions in and out of Equilibrium
… anti-de Sitter (AdS) space, and under this duality, the study of classical black holes corresponds to studying thermal states of very strongly coupled conformal field theories (CFTs) — an extremely challenging feat without the aid of holography. Firstly, we consider a braneworld scenario, …
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Exotic States in Quarkonium Physics: Effective Theories of Heavy Mesonic Molecules and an AdS/QCD Model of Hybrid Quarkonium
… end are effective field theories and gauge/gravity dualities. The former involves</p><p>a field theory more or less like QCD itself, but with states which are composites</p><p>of quarks and gluons. Then a perturbative expansion is made not in terms of the</p><p>gauge coupling but …
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Recent Progress in Quantum Gravity: Karch-Randall Braneworld, Entanglement Islands and Graviton Mass
… of entanglement islands and quantum gravity. We illustrate the concept of entanglement island and its implications to the black hole information paradox using the so called KR braneworld, which provides the only existing calculable models of entanglement island in higher spacetime …