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 93 for “"Theoretical Physics"”.
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Relativistic quantum field in theoretical physics
… field theory is the most well-developed tool in theoretical physics to study about the dynamics at microscopic scales, with particles and quantum behaviors. In this thesis I'll review about the construction of quantum field theory from the S-matrix point of view (building up particles and …
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Studies on two topics in theoretical physics: Entanglement entropy and holographic superconductors
This thesis contains two parts. The _rst part consists of the _rst two chapters, studying the entanglement entropy. The second part consists of the third chapter, dealing with holographic superconductors. In chapter one we calculate the topological entanglement entropy of Chern-Simons theories in …
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Introduction to supersymmetry
The tendency in theoretical physics, particularly in the past few decades, has been towards unification: over the years it has emerged that increasingly many physical phenomena can be explained by a common underlying theory. Symmetry principles, both global and local, play an important role in this …
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Quantum Electrodynamic Bound-State Calculations and Large-Order Perturbation Theory. - (This manuscript is also available - in the form of a book - from Shaker Verlag GmbH, Postfach 101818, 52018 Aachen, Germany world-wide web address: http://www.shaker.de, electronic-mail address: info@shaker.de. It has been posted on the web sites of Dresden University of Technology with the permission of the publisher.)
… is one of the rather challenging tasks in theoretical physics. The entire formalism of quantum (gauge) field theory, augmented by the difficulties of the bound-state formalism, is needed for an accurate understanding of the relevant physics at the level of current high-precision …
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DUALITIES IN FOUR, THREE AND TWO DIMENSIONS
Modern Physics is grounded on two apparently irreconcilable descriptions: Quantum Field Theories (QFTs) and Gravity. Two major challenges for Theoretical Physics are represented by the understanding of the strong coupling regime of Quantum Field Theory and by the reconciling of QFT with classical …
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Modified Gravity and Cosmology on the Largest Scales
… a series of my contributions to research in theoretical cosmology, focusing on aspects of the very large scale universe, particularly dark energy, cosmic acceleration, modified gravity, and cosmic variance. Following an overview of the current understanding of the standard cosmological model …
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Fluctuating Open Heavy Flavour Energy Loss in a Strongly Coupled Plasma with Observables from RHIC and the LHC
… independent. There also exists systematic theoretical uncertainties associated with the mapping of parameters in N = 4 SYM theory to QCD. We look at two reasonable sets of parameters to try and capture these uncertainties. We will also present results of the v2(pT ) for B-mesons describing …
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On algebraic singularities, finite graphs and D-brane gauge theories : a string theoretic perspective -- with a digression on string field theory
… and quiver representations, as well as the physics, such as gauged linear sigma models, geometrical engineering, Hanany-Witten setups and D-brane probes. We present the work of the author in the past 4 years at the Centre for Theoretical Physics, on aspects of the world-volume gauge dynamics …
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Aspects of amplitudes, gravity & complexity
In this thesis, we explore two aspects of modern theoretical physics: scattering amplitudes in gravitational theories and entanglement entropy & complexity in quantum field theory. In part one, we utilise modern scattering amplitude techniques to efficiently calculate the deflection angle of both …
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Electronic properties of doped Mott insulators and high temperature superconductors
… fields of material science and experimental and theoretical physics. As first noted by Anderson, these materials are doped Mott insulators and the novel phenomenology emerges in the regime intermediate to the Neel state and the Fermi liquid metal where electrons evolve from being local moments to …
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Cosmographic Origins for a New Classicism
… systems of ideas are given by 20th century theoretical physics. They are the foundation of our science and provide an explicit basis for all branches of scientific endeavor. Taken as a whole, they constitute the current understanding of our universe--our world. What emerges from the ideas …
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Radiative symmetry breaking in the supersymmetric minimal B-L extended standard model
The Standard Model (SM) of particle physics is a precise model of electroweak interactions. However, there is evidence from neutrino physics and astrophysical cosmology which is at odds with the SM framework. It appears likely that the validity of the SM will be compromised at energy scales of a …
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