Physics
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Search for Events with Two Displaced Vertices from Pair-Produced Neutral Long-Lived Particles Decaying to Hadronic Jets in the Muon Spectrometer of the ATLAS Detector with Full Run 2 Data
This analysis is a search for events with two displaced vertices reconstructed from the decay of pair-produced neutral, weakly-interacting, long-lived particles using the muon spectrometer of the ATLAS detector. The search ... -
An exploration of data-driven system identification and machine learning for plasma physics
Plasma is the most common state of visible matter in the universe and provides a myriad of scientific and engineering applications. However, the complexity of these systems poses a significant challenge for understanding ... -
FASER tracker performance and electron energy resolution in the FASERv pilot detector
In collider experiments, very light particles are produced in the far-forward direction with small angle relative to the beam axis and can travel a long distance before decaying. The ForwArd Search ExpeRiment (FASER) is ... -
Pions in Neutron-rich Matter: Implications for Neutron Stars and Supernovae
The effects of pions on astrophysical phenomena have been studied for decades. In the 1970s, Migdal and Sawyer independently proposed that pions could condense in dense matter due to attractive p-wave interactions with ... -
A Search for Wavelike Dark Matter with Dielectrically-loaded Multimode Cavities
Dark matter makes up 85% of the matter in the universe and 27% of its energy density, but we don’t know what comprises dark matter. There are several compelling candidates for dark matter that have wavelike properties, ... -
Modeling Complex Multicomponent Materials with First-Principles Based Statistical Mechanics and Machine Learning
Recent progress in the engineering of multicomponent, solid-state compounds for optoelectronic applications has entailed an ever expanding range of material chemistries and a rapid increase in material complexity. For ... -
Novel Methods in Trapped-Ion Quantum Computing: Single-Photon-Sensitive Time-Resolving Camera, Sympathetic Cooling, and Qutrit
Qubit state detection and ion imaging is an important part of quantum computation. Here we demonstrate the use of Tpx3cam, a novel single-photon sensitive camera, in trapped ion experiments. We perform detection of the ... -
Shallow Donor Qubits in ZnO Nanowires for Quantum Applications
Donors in ZnO are a promising candidate for quantum network-based quantum technologieswith narrow optical lines (7-20 GHz), efficient spin-to-photon transfer (∼90% zero-phonon line efficiency), and long spin coherence times ... -
Quantum light-matter interaction of two-dimensional optical transitions coupled to dielectric microresonators
Photonic integrated circuits have the potential to be a disruptive technology comparable to the success of electronic integrated circuits. The absence of a compact, low-power all-optical nonlinearity limits the capability ... -
Neutron stars as laboratories for fundamental physics: from dense QCD to dark matter
This dissertation explores the subatomic world with observations of neutron stars. Neutron stars are exotic and mysterious objects and are placed under the spotlight with current and planned investigations. In the coming ... -
Probing the Symmetry-Breaking Phases in Iron-based Superconductors with Combined Strain, Transport and X-ray Techniques
Spontaneous rotational symmetry breaking phases, such as the electronic nematic phase and charge and spin stripe phases, are commonly found in the phase diagram of strongly correlated materials including many of the ... -
The Debye Mechanism in Superconductors
This thesis will study a new mechanism of charge transport in various types of superconductors, the Debye mechanism. This mechanism gives rise to a conductivity that is controlled by the \emph{inelastic} relaxation time, ... -
Quantum complexity of symmetry-protected topological phases of matter
Classical computers have been instrumental to our understanding of quantum phases of matter. However, their ability to simulate quantum many-body systems is fundamentally limited – there are quantum systems that are ... -
Emergent phenomena and device applications in magnetic van der Waals heterostructures
Van der Waals (vdW) heterostructures built by the vertical stacking of various 2D materials provide an ideal platform for the rational design of emergent phenomena and device applications. The recent discovery of atomically ... -
Searches for pair production of Higgs bosons in the $b\bar{b}b\bar{b}$ final state using the ATLAS detector, or: How I Learned to Stop Worrying and Love the QCD Background
This thesis discusses searches for pair production of Higgs bosons in the $b\bar{b}b\bar{b}$ final state using data recorded by the ATLAS detector from $\sqrt{s} = 13$ TeV proton-proton ($pp$) collisions during the full ... -
Analytical forward models for magnetic induction of asymmetric, icy ocean worlds with implications for spacecraft investigations
Oscillating magnetic fields are screened within electrically conducting materials by induced currents, which generate secondary, induced magnetic fields. Induced fields are measurable outside the conducting body, and adopt ... -
Theoretical models of hybrid light-matter systems and their applications
Controllable light-matter interactions are of central importance to a broad range of problems at the heart of modern theoretical, experimental, and applied physics, particularly in the rapidly expanding areas of nanoscale ... -
Anomalous Transport Behavior in the Vicinity of a Topological Phase Transition in ZrTe5
Understanding the impact of topology on electrical transport properties is currently an area of intense research, motivated by the potential application of engineering materials with physical properties that are protected ... -
3d Bosonization: Flavor-Violated, Bordered, Quivered, and Stacked
In this work we discuss several aspects of the 3d bosonization dualities, which are a conjectured equivalence between Chern-Simons matter theories in $2+1$-dimensions. We propose a new phrase diagram for the most general ... -
Extended Search for Axion Dark Matter with ADMX
The axion is a hypothetical elementary particle that came out of a solution to the Strong-CP problem in Quantum Chromodynamics (QCD). The properties of the axion also make it a highly compelling candidate for dark matter. ...
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