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 29 for “"gauge/gravity"”.
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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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Suppressions and cascades : insights from gauge/gravity dualities
… analytic methods available for investigating gauge theories at large couplings. Consequently, it is desirable to explore more avenues to gain qualitative and quantitative insights. The gauge/gravity (AdS/CFT) correspondences provides a unique opportunity to study gauge theories both at finite …
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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 the PP wave/ CFT correspondence
… PP wave/CFT duality as a concrete example of the gauge-gravity correspondence.
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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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Interacting fermions : a holographic approach/
… at the problem from the novel point of view of gauge/gravity, or holographic, duality.
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New effective theories of gravitation and their phenomenological consequences
… objective of this Thesis is to explore Poincaré Gauge theories of gravity and expose some contributions to this field, which are detailed below. Moreover, a novel ultraviolet non-local extension of this theory shall be provided, and it will be shown that it can be ghost- and singularity-free at …
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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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A study of holographic superconductors
… a gravitational theory within the frame work of gauge/gravity correspondence is investigated more extensively for s-wave superconductors. We consider a gravitational theory with a black hole solution in anti de Sitter spacetime, coupled to an Abelian-Higgs system in (d + 1)-dimensions. A wide …
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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
… 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 theory can be considered to reside on the boundary of the bulk space that …
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Transport in a Strongly Coupled Charged Relativistic Quantum Fluid in the Presence of a Chiral Anomaly & a Strong Magnetic Field Via Hydrodynamics & Holography
… of novel transport phenomena. According to the gauge/gravity correspondence, also referred to as holography the described field theory state is dual to a charged magnetic black brane which is a solution of Einstein-Maxwell-Chern-Simons theory. I compute the quasinormal modes which are …
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