Browsing by Author "Mullen, Kieran"
Now showing items 1-20 of 26
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Baryogenesis Scenarios for Natural Supersymmetric Particle Physics Models
Zhang, Yifan (2019-12-06)Supersymmetric models with radiatively-driven electroweak naturalness require a light higgsino of mass ∼ 100 − 300 GeV. Naturalness in the QCD sector is invoked via the Peccei-Quinn (PQ) axion leading to mixed axion-higgsino ... -
Collective Behaviors of Quantum Emitters Coupled to a Structured Photonic Environment
Talukdar, Jugal (2023-07)The study of a quantum system coupled to an environment plays an indispensable role in expanding our understanding of quantum mechanics. It has a broad impact, encompassing fundamental inquiries in quantum physics as well ... -
The dark universe: the interplay of cosmological moduli, axions, and the MSSM
Wiley Deal, Robert (2023-05)In this work, we introduce two effective field theories which parameterize a light modulus field interacting both with the MSSM ($\phi$MSSM) and with the MSSM combined with an additional supersymmetric DFSZ axion ($\phi$PQMSSM). ... -
The Early Instability Scenario for Planet Formation in the Solar System
Clement, Matthew (2019-05-10)The leading evolutionary model for the outer solar system, an orbital instability between the solar system’s giant planets, has been shown to greatly disturb the orbits of the young terrestrial planets. Undesirable outcomes ... -
Equilibrium and Transport Properties of Systems Containing Graphene Sheets (-Oil Nanocomposites and Membranes) from Molecular Dynamics Simulations
Konatham, Deepthi (2014-12-12)Graphene sheets belong to an interesting class of materials. Their exceptional properties, including high thermal and electrical conductivity, mechanical strength etc., could play an important role in multiple applications, ... -
The Great Plains Nocturnal Low-Level Jet: Spatial and Temporal Evolution
Smith, Elizabeth (2018-12)The nocturnal low-level jet (NLLJ) is a maximum in the vertical wind profile often occurring in the lowest 1-km of the atmosphere during the overnight hours in the Great Plains of the United States. This wind maximum has ... -
GROUND STATE ENTANGLEMENT IN 2D STRONGLY INTERACTING BOSE-HUBBARD-TYPE MODELS
Wang, Wei (2017)In this dissertation, I present my work on ground state entanglement in Bose-Hubbard-type models. Bose-Hubbard-type models form a wide class of bosonic lattice models and describe systems that can be realized by cold atoms ... -
High Contrast Imaging of Planet-forming Disks with Extreme Adaptive Optics Systems
Lawson, Kellen (2022)Circumstellar disks serve as benchmark systems to study how and where exoplanets form. With the advent of ground-based extreme adaptive optics (AO) facilities, we have entered a revolutionary era for disk studies. It is ... -
Improving the thermal conductivity of nanotube composites via end functionalization: random walks and molecular dynamics
Burt, Timothy (2017-12)The high thermal conductivity of carbon nanotubes (CNTs) has promise for improving the thermal conductivity of nano composites. However, their large Kapitza resistance has frustrated this effect. One solution is to ... -
Interaction effects in generalized Dirac systems
Dou, Xu (2018-07)Interaction effects in condensed matter systems with chiral quasiparticles at low energy are studied. A prominent example in the category of such systems is monolayer graphene, which has low energy massless Dirac excitations ... -
Interaction Effects in Quantum Wires and One-Dimensional Incoherent Semimetals
Jose, Geo (2022-08-04)In this thesis, we address the effect of interactions in low dimensional systems. In the first part, using bosonization, we study a microscopic model of parallel quantum wires constructed from two dimensional Dirac fermions ... -
Intervalley Scattering in III-V Heterostructures and its Application to Valley Photovoltaic Hot Carrier Solar Cells
Dorman, Kyle (2022-12-16)The efficiency limit of 33% for a single gap solar cell is not fundamental. Mitigation of thermalization losses which occur when high energy ‘hot’ carriers are only extracted at the same energy as low energy carriers is a ... -
Investigation into molecular beam epitaxial growth and characterization of InGaAs structures and InAs superlattices
Vijeyaragunathan, Sangeetha (2014-05)(1) InGaAs quantum wells have been experimentally studied for their potential application in electronic devices. The narrow band gap of InGaAs lead to smaller effective masses for electrons and holes, which results in ... -
Measurement of ggF and VBF Higgs boson production cross-sections in the H->WW*->evmv decay channel from pp collisions collected with the ATLAS detector at the LHC
Shope, David (2019-12)This thesis describes measurements of the inclusive Higgs boson production cross-sections via gluon-gluon fusion (ggF) and vector-boson fusion (VBF) through the H->WW*->evmv decay mode, using proton-proton collision data ... -
Modeling Broad Absorption Line Quasars with Spectral Synthesis: Program Development and Analysis
MacInnis, Francis (2018-05-11)Quasars with broad absorption lines (BALQSOs) are often the target of outflow studies because these features are clear markers of energetic winds. Within this population is a class known as FeLoBALs, named for the FeII ... -
MOLECULAR BEAM EPITAXY OF ANTIMONY QUANTUM WELLS FOR PROBING TOPOLOGICAL SURFACE STATES
Wickramasinghe, Kaushini (2017)A topoelectronic transition was predicted for an Sb quantum well (QW) as a function of QW thickness. Bulk Sb is a semimetal with a negative bandgap, with neither the conduction band minimum nor the valence band maximum at ... -
MULTIPLE-STAGE INTERBAND CASCADE PHOTOVOLTAIC DEVICES USING 6.1 Å SEMICONDUCTOR MATERIALS
Hinkey, Robert (2013-12-13)Interband cascade photovoltaic (IC PV) structures are an attractive alternative to the conventional long-absorber diode structures currently used for mid-infrared photovoltaic devices. The unique feature of IC PV devices ... -
Nanoscale studies of thermal transport: R-matrix theory and thermal transport in strained graphene nanoribbons.
Gunawardana, K.G. Samantha Harshadewa (2011)The rapid development of nanotechnology has enabled the fabrication of structures much smaller than the mean free path of electrons and phonons. In modern electronics, miniaturization is desired to increase the transistor ... -
Observations of Evolving Lightning, Microphysics, and Kinematics for a Supercell, a Multicell, and a Mesoscale Convective System
DiGangi, Elizabeth (2019)The Deep Convective Clouds and Chemistry (DC3) field experiment collected data on a variety of storms to investigate the relationships between lightning and other storm processes. This study focuses on the relationships ... -
Optimizing Thermal Conductivity in Functionalized Macromolecules
Ait moussa, Abdellah (2012)The quest for high thermal conductivity materials has lead to nano-composites incorporating macromolecular materials with excellent thermal conductivity, such as carbon nano-tubes and graphene nano-ribbons, in a matrix ...