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 200 for “"strongly coupled"”.
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Strongly coupled fermions on the lattice
… of phase transitions in a variety of other strongly coupled theories of interest to both high energy and condensed matter theorists. The lattice approach to QCD has led to an understanding of quark confinement, chiral symmetry breaking and hadronic physics. Correlation functions of hadronic …
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Power transfer through strongly coupled resonances
Using self-resonant coils in a strongly coupled regime, we experimentally demonstrate efficient non-radiative power transfer over distances of up to eight times the radius of the coils. We use this system to transfer 60W with approximately 45% efficiency over distances in excess of two meters. We …
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Strongly coupled plasmas and the QCD critical point
… of quarks and baryons which live in the strongly coupled plasma of certain gauge theories which are similar to QCD using the AdS/CFT correspondence. We first study the velocity dependence of the screening length, L,, of Nc quarks arranged in a circle (a "baryon") immersed in the hot …
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Beyond Color: Lattice Gauge Theory for Strongly-Coupled Physics
Quantum Chromodynamics (QCD) is the prototypical strongly interacting Quantum Field Theory (QFT). It is the interaction that yields the strong nuclear force that binds protons and neutrons together. The underlying mathematical picture of QCD is known exactly: it is an 𝑆𝑈(3) gauge theory coupled to …
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On hadrons and inflatons: the holography of strongly coupled processes
… 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 hosts the gravitational theory. In this thesis, I will provide background …
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Aspects of strongly-coupled field theory from gauge-gravity duality
The issue of calculating at strong coupling 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 …
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Strongly coupled systems : from quantum antiferromagnets to unified models for superconductors
I discuss the significance of the antiferromagnetic Heisenberg model (AFHM) in both high-energy and condensed-matter physics, and proceed to describe an efficient cluster algorithm used to simulate the AFHM. This is one of two algorithms with which my collaborators and I were able to obtain …
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Study of the AdS/CFT correspondence and its applications to strongly coupled phenomena
La correspondencia AdS/CFT, o también llamada dualidad holográfica, ha llegado a ser una de las herramientas más potentes para describir sistemas físicos en donde las interacciones entre sus constituyentes no se pueden describir mediante análisis perturbativo. En la presente tesis, se han examinado …
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An Algebraic Volume of Fluid Method for Strongly Coupled Spacecraft Fuel Slosh Modelling
… conservative. Both CICSAM and HiRAC are then coupled (HiRAC for the first time) to a well balanced Continuum Surface Force (CSF) surface tension discretisation. The surface tension implementation, for which standard height functions are used, is shown to be well-balanced with an accuracy that …
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Light-Matter Interactions in High-Efficiency Photovoltaics, Light-Emitting Devices, and Strongly Coupled Microcavities
The interactions of light and matter drive many of today’s devices, from electricity generation and consumption to manipulation. Within electricity generation, emerging thin film photovoltaics now rival traditional silicon-based solar cells in terms of power conversion efficiency (PCE) due to …
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Vignettes in string theory : using geometry to probe the worldsheet and strongly coupled physics
In this thesis, we construct hybrid linear models in which the chiral anomaly of a gauged linear sigma model is canceled by the classical anomaly of a gauged WZW model. Semi-classically, this corresponds to fibering the WZW model over the naive target space of the sigma model. When the gauge group …
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Strongly-Coupled Conjugate Heat Transfer Investigation of Internal Cooling of Turbine Blades using the Immersed Boundary Method
The present thesis focuses on evaluating a conjugate heat transfer (CHT) simulation in a ribbed cooling passage with a fully developed flow assumption using LES with the immersed boundary method (IBM-LES-CHT). The IBM with the LES model (IBM-LES) and the IBM with CHT boundary condition (IBM-CHT) …
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Theory for strongly coupled quantum dot cavity quantum electrodynamics - Photon statistics and phonon signatures in quantum light emission
Aktuelle Fortschritte in der Halbleitertechnologie etablieren ein neues physikalisches System, um quantenoptische Eigenschaften auf Nanoskalen zu untersuchen: ein Quantenpunkt in einem Mikroresonator. Im Falle einer starken Kopplung übertrifft die Stärke der Elektron-Licht Wechselwirkung die …
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Fluctuating Open Heavy Flavour Energy Loss in a Strongly Coupled Plasma with Observables from RHIC and the LHC
… of B-mesons using AdS/CFT techniques assuming a strongly coupled quark-gluon plasma (QGP). These energy loss predictions are presented for collision energies √ sNN = 2.76 TeV for central collisions and √ sNN = 5.5 TeV for various centrality classes. There are some uncertainties in terms of how we …
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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
Motivated by applications to the quark gluon plasma state generated in heavy ion collisions, I study a 4-dimensional supersymmetric conformal field theory in the thermal state, carrying axial charge, and subject to a strong external magnetic field, $B$. This theory has a chiral anomaly, which …
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Properties of quark gluon plasma at weak and strong coupling
… propagates for a distance L through a weakly coupled medium without radiating to pick up transverse momentum k1. Results for P(k1 ) in weakly coupled quark gluon plasma are compared to expectations from holographic calculations that assume a plasma that is strongly coupled at all length …
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Phase transitions and symmetry breaking in disordered quantum Hall edge states
… the weak-tunneling fixed point to a different strongly coupled fixed point with different conductance and effective charge. Edges with multiple modes can have multiple strongly coupled fixed points. We develop a general formalism to analyze weakly and strongly coupled fixed points of point …
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Towards a Quantum Network with Waveguide Quantum Electrodynamics
… computation. Systems of superconducting qubits strongly coupled to a continuum of photonic modes in 1D coplanar waveguides, described by the formalism known as waveguide Quantum Electrodynamics (wQED), are emerging as a promising platform for quantum communication. In this work, we develop a …
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Light scattering studies of magnetostructural phases in Mn3O4 and charge density wave melting in ZrTe3
… which indicates that these phonons are strongly coupled to regions of the Fermi surface that are gapped by the CDW. These strongly-coupled phonons involve internal vibrations of ZrTe3 prismatic rods. Applying pressure progressively removes spectral weight from peaks that represent the …
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Probes of strongly interacting plasma
… results on the medium/probe interaction in the strongly coupled plasma produced in heavy-ion collisions. Such processes involve physics at multiple energy scales making a consistent theoretical description challenging. We show how insights from various regimes can be combined to extend our …
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