Theses/Dissertations - Physics
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Nonlinear responses in dusty plasmas.
(2020-09-29)Dusty plasma as a system containing both plasmas and dust particles. Dusty plasma systems are found throught out the industy and the space, for example, dust are found in plasma etching and in TOKAMAKs, as well as Saturn ... -
Enhancing hadron jet reconstruction in the CMS Level-1 trigger using machine learning.
(2022-05-03)Level–1 Trigger (L1T) algorithms used in the Compact Muon Solenoid (CMS) experiment for detecting different physics objects must be optimized to ensure that CMS continues to collect the most interesting proton–proton ... -
Search for new physics using top quark pairs produced in association with a boosted Z or Higgs boson in effective field theory.
(2022-03-29)A data sample containing top quark pairs (t ̄t) produced in association with a boosted Z or Higgs boson is used to search for signs of new physics within the framework of effective field theory. The data correspond to an ... -
Extremal conditions in early universe cosmology.
(2021-10-22)Some aspects of Special Relativity have remained largely unresolved and unexplored even after more than a century since its formulation; this is particularly true in the case of relativistic thermodynamics. Attempts to ... -
Gravitational waves in Einstein-aether theory.
(2021-05-24)We study gravitational waves produced by N-body systems in Einstein-aether theory. In particular, we calculate the gravitational waveforms, polarizations, response functions of the detectors and the radiation power by using ... -
Investigation of electrically-induced light emission in epsilon near zero (ENZ) heterostructure.
(2021-05-04)Electrically driven plasmonic nanostructures can generate and guide highly confined light. Light emission and the excitation of surface plasmon polaritons by inelastic electron tunneling have been shown in metal-insulator-metal ... -
Gravitational waves and cosmology.
(2021-04-14)The recent discovery of GW140915 and the confirmation of the existence of gravitational waves (GWs) has garnered the attention of many physicists as they seek to understand their behavior as they travel across the universe. ... -
Plasmonics and epsilon-near-zero photonics in optical fiber and thin film platforms : from extreme light nanofocusing to enhanced spontaneous emission.
(2021-04-12)The major challenges in the study of light-matter interaction in the deep subwavelength regime are the inefficient conversion of nearfield to farfield energy, low signal-to-noise ratio, complicated device designs requiring ... -
Advanced light manipulation and waveguiding in plasmonic nanostructured optical fibers.
(2021-04-29)Conventional optical fibers are well-known for their efficient light guiding mechanism. However, the dielectric properties of core and cladding materials (e.g.- doped silica and silica glasses) limit the functionality of ... -
Testing theories of gravity by gravitational wave observations.
(2021-04-01)In this dissertation, Einstein-æther theory is studied. As a candidate of modified theories to general relativity, Einstein-æther theory shows some different features compared to Einstein’s theory. The studies of these ... -
Precision theory for LHC/FCC : new results for the five point function and interface between KKMC-hh and MG5_aMC@NLO.
(2021-01-11)The development of large colliders provides us with the opportunity to discover the fundamental particles in nature and explore the interactions among them. The Standard Model (SM) of particle physics reflects our best ... -
Investigations of the plasma conditions in the sheath using dust grain as probes.
(2020-11-03)Dust particles can be levitated against gravity in the sheath of the plasma, and different types of ordered structures can be formed by adjusting the pressure and power of the system. To explain the formation and stability ... -
Search for supersymmetric top quarks in the CMS Run 2 data set.
(2020-10-21)Elementary particle physics is described very accurately by the Standard Model. With the discovery of the Higgs boson at CERN by ATLAS and CMS in 2012, the full set of fundamental particles in the Standard Model has been ... -
Multi-pulse nonlinear optical spectroscopy and light-matter interactions in layered materials.
(2020-10-28)The interaction between light and matter is one that underscores many applications from solar energy conversion to optical sensing of biological materials. The use of multiple pulses to study these interactions are especially ... -
Deflation methods in lattice QCD.
(2020-07-20)The inversion of the Dirac operator is a necessary feature of calculating physical observables within lattice QCD. The calculation of fermionic forces within hybrid Monte Carlo and the formation of quark propagators are ... -
Nanoscale chemical imaging with novel fiber tip-enhanced Raman spectroscopy and microscale study of surface reactions on monolayer MoS2.
(2020-07-30)Study of molecule-surface interaction dynamics requires nanoscale chemical and topological information. Full dynamic understanding cannot be provided by microscale optical spectroscopy and has been aided by nanoscale imaging ... -
First search for pair production of scalar top quarks decaying to top quarks and light-flavor jets with low missing transverse momentum.
(2020-07-21)After the discovery of the Higgs boson in 2012, the current best theoretical model that describes all observed particles and their interactions, the standard model (SM), was considered complete. However, there are a plethora ... -
Curvature invariants for wormholes and warped spacetimes.
(2020-05-01)The Carminati and McLenaghan (CM) curvature invariants are powerful tools for probing spacetimes. Henry et al. formulated a method of plotting the CM curvature invariants to study black holes. The CM curvature invariants ... -
Modeling dust coagulation and chondrule dust rim growth in a protoplanetary disk.
(2019-12-03)Coagulation of dust particles plays an important role in the formation of planets and is of key importance to the evolution of protoplanetary disks (PPD). Characteristics of dust, such as the diversity of particle size, ... -
Gravitational radiation and black hole formation from gravitational collapse in theories of gravity with broken Lorentz symmetry.
(2019-07-12)Quantum gravity is expected to contain Lorentz symmetry only as an emergent low energy symmetry with the scale at which it is broken presently inaccessible to current experiments. My research, is centered around understanding ...
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