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Heavy Flavor Interactions And Spectroscopy From Lattice Quantum Chromodynamics, Zachary S. Brown
Heavy Flavor Interactions And Spectroscopy From Lattice Quantum Chromodynamics, Zachary S. Brown
Dissertations, Theses, and Masters Projects
In the present work, spectroscopy and interactions of hadrons containing heavy quarks is investigated. In particular, a focus is placed on properties of exotic heavy hadronic states, including doubly and triply heavy baryons and doubly heavy tetraquark states. The framework in which these calculations are carried out is provided by lattice quantum chromodynamics, a discrete formulation of the modern theory of the strong interaction. The main body of the thesis had two main project focuses. For the first project, an extensive calculation of the mass spectrum of doubly and triply heavy baryons including both charm and bottom quarks is carried …
Electronic Properties Of Chiral Two-Dimensional Materials, Christopher Lawrence Charles Triola
Electronic Properties Of Chiral Two-Dimensional Materials, Christopher Lawrence Charles Triola
Dissertations, Theses, and Masters Projects
In this dissertation we study the electronic properties of certain two-dimensional chiral electron systems. We study the static and dynamic screening of gapped bilayer graphene and find important qualitative differences between the dielectric screening function obtained using a simplified 2-band model and that obtained using a more sophisticated 4-band model. We also formulate a continuum model to study the low-energy electronic properties of heterostructures formed by graphene on a strong three-dimensional topological insulator (TI) both for the case of commensurate and incommensurate stacking. We find that the proximity of the TI induces a strong enhancement of the spin-orbit coupling in …
Some Properties Of Meson Excited States From Lattice Qcd, Ekaterina V. Mastropas
Some Properties Of Meson Excited States From Lattice Qcd, Ekaterina V. Mastropas
Dissertations, Theses, and Masters Projects
The work presented here is devoted to the calculations of the decay constants of the pion and its excited states. All calculations were carried out in the framework of lattice quantum chromodynamics, a well-established formalism of strong interactions enabling the ab initio solution of the theory. After a short introduction and review of the fundamental approaches and methods commonly used in lattice QCD, I provide a detail description of the numerical simulations which were performed at three values of the pion mass between 400 and 700 MeV, using an anisotropic clover fermion action with three flavors of quarks. The results …
Ultracold Rubidium And Potassium System For Atom Chip-Based Microwave And Rf Potentials, Austin R. Ziltz
Ultracold Rubidium And Potassium System For Atom Chip-Based Microwave And Rf Potentials, Austin R. Ziltz
Dissertations, Theses, and Masters Projects
In this dissertation we study the development of microwave and RF near-field potentials for use with atom chip trapped atomic gases. These potentials are inherently spin-dependent, able to target individual spin states simultaneously. In contrast with traditional atom chip potentials, these RF traps can be operated at arbitrary bias magnetic field strengths and thus be combined with magnetic Feshbach resonances. Furthermore, these potentials can strongly suppress the potential roughness that plagues traditional atom chip potentials. We present a dual chamber atom chip apparatus for generating ultracold 87Rb and 39K atomic gases. The apparatus produces quasi-pure Bose-Einstein condensates of 104 87Rb …
Sterile Neutrino Search With Minos., Alena V. Devan
Sterile Neutrino Search With Minos., Alena V. Devan
Dissertations, Theses, and Masters Projects
No abstract provided.
Determination Of The Proton's Weak Charge Via Parity Violating E-P Scattering., Joshua Russell Hoskins
Determination Of The Proton's Weak Charge Via Parity Violating E-P Scattering., Joshua Russell Hoskins
Dissertations, Theses, and Masters Projects
No abstract provided.
Studies Of Molecular Dynamics Of Fmoc Amino Acids Using Solid State Deuteron Nuclear Magnetic Resonance Spectroscopy, Wei Xu
Dissertations, Theses, and Masters Projects
The purpose of devising and validating models for intramolecular motions for FMOC amino acids is to quantify side chain motion in proteins which plays an important role in understanding biological structure function relations of proteins. In this thesis, spin lattice relaxation times (Ti) of FMOC amino acids were m easured under both static and magic angle spinning (MAS) condition at variable tem peratures. Lower activation energies of the relaxation times than the normal amino acids observed indicate a less sterically crowded environment for the rotation methyl group. A three-site jump model for the methyl group w as developed to fit …