Physics
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An image segmentation, lineage and analysis tool for bacteria: Applications in cell proliferation and cytoplasmic dynamics.
Because of the stochastic nature and significant cell-to-cell variation of many biological processes, it is essential to analyze a significant number of cells to understand such processes at the single cell level. Such ... -
A Piezoelectrically Tuned RF-Cavity Search for Dark Matter Axions
The Axion is a well motivated hypothetical elementary particle that must exist in nature if the strong CP problem of QCD is explained by the spontaneous breaking of a Peccei-Quinn symmetry. Not only would the discovery of ... -
Ion Photon Entanglement in a Parabolic Mirror Trap
Single trapped ion qubits are excellent candidates for quantum computation and information, and they also possess the ability to coherently couple to single photons. Efficient fluorescence collection is the most challenging ... -
Search for long-lived particles decaying in the muon spectrometer of the ATLAS detector at the LHC
This thesis presents the results of two searches for long-lived, weakly-interacting neutral particles. These searches are performed with 22.1/fb of proton-proton collision data collected with the ATLAS detector at the Large ... -
Toward a Loophole-Free Bell Inequality Violation with Barium Ions
The successful generation of ion-photon entanglement with a singly-trapped Barium ion and the photon it spontaneously emits is reported along with the current progress and technical details for extending this work to a ... -
Optical and Spin Properties of Defect-Bound Excitons in Semiconductors
The physical properties of semiconductor defects are highly relevant for future quantum technologies and current semiconductor device performance. Optical spectroscopy is a powerful tool for investigating a wide variety ... -
Aspects of Chiral Symmetry Breaking in Lattice QCD
In this thesis we describe two studies concerting lattice quantum chromodynamics (LQCD): first, an analysis of the phase structure of Wilson and twisted-mass fermions with isospin breaking effects, second a computational ... -
Device Physics of Two-Dimensional Crystalline Materials
The study of two-dimensional (2D) electrons in condensed matter physics has two milestones: quantum Hall effects in semiconductor heterostructures and superconductivity in cuprates. In both, the 2D electrons are embedded ... -
The role of nuclear physics in supernovae and the evolution of neutron stars, Neutrino Opacities, Equation of State, Transport Coefficients, and Dark Matter Production
A massive star, of at least eight solar masses, end their life cycle in a sudden, catastrophic collapse under its own gravity. In a thousandth of a second, it can shrink from thousands of kilometers across to a ball of ... -
Searches for Beyond Standard Model Higgs Bosons in pp collisions at sqrt(s) = 8 and 13 TeV with the ATLAS detector
The searches for a Beyond Standard Model (BSM) heavy CP-odd Higgs boson $A$ decaying to $Zh$ in the context of two-Higgs-doublet models (2HDM), and Minimal Supersymmetric Standard Model (MSSM) neutral Higgs bosons $H/A$ ... -
Understanding near Fermi-level electronic structure through x-ray emission spectroscopy
Atomic and molecular chemical properties are largely determined by the electronic structure of near Fermi-level states. Determining this structure is therefore one of the central tasks in materials characterization and ... -
Holographic Tools for Probing the Dynamics of Strongly Coupled Field Theories
Since it was conjectured almost 20 years ago, AdS/CFT duality, or holography, has enabled steady progress in understanding certain gauge theories in the strongly coupled limit. In this thesis we examine various aspects of ... -
A search for hep solar neutrinos at the Sudbury Neutrino Observatory
Solar neutrinos from the fusion hep reaction, (helium-3 fusing with a proton to become helium-4, releasing a positron and neutrino), have previously remained undetected due to their flux being about one one-thousandth that ... -
Applications of Quantum Field Theory, From the Formal to the Phenomenological
Much of the beautiful and complex phenomenology of the Standard Model can be traced back to the presence of chiral symmetries, both global and local, and nonperturbative phenomena. Without chiral symmetries (and the anomalous ... -
Functionality, Robustness and Control of Nonlinear Network Dynamics: Modeling and Understanding the C. elegans Connectome
Networks of many nonlinearly-coupled dynamical components are ubiquitous in the physical sciences, but often difficult to characterize. However, their dynamics are often low-dimensional, being dominated by a few functional, ... -
Developments in the Theory of X-ray Absorption and Compton Scattering.
X-ray spectroscopy is a widely used technique in experimental and theoretical physics for studying electronic and chemical properties of materials. Theoretical approaches for studying x-ray absorption (XAS) and x-ray ... -
Variability of Point Sources of Gamma Rays Detected by the Fermi Large-Area Telescope
The Large Area Telescope (LAT) aboard the Fermi Gamma-Ray Space Telescope has revolutionized gamma-ray astronomy, allowing the detection of thousands of point sources of gamma rays. Variability studies are of significant ... -
Developments for a measurement of the beta-nu correlation and determination of the recoil charge state distribution in 6He beta decay
The beta-nu of a pure Gamow-Teller beta decay such as the 6He decay is sensitive to tensor-type weak currents predicted by theories beyond the Standard Model. An experiment is developed at University of Washington aiming ... -
Investigating and Improving Student Understanding of Key Ideas in Quantum Mechanics throughout Instruction
This dissertation describes research on student understanding of quantum mechanics across multiple levels of instruction. The primary focus has been to identify patterns in student reasoning related to key concepts in ... -
Aluminum Content Tunability of Structural and Optical Properties in Wide-Gap Semiconducting (AlxGa1-x)2O3
(AlxGa1-x)2O3 alloys have attracted renewed interest due to their potential for use in deep-ultraviolet optical devices and high-powered transistors, but realization of these technologies depends on the ability to tune the ...
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