Browsing Physics and Astronomy by Type "Doctoral Thesis"
Now showing items 120 of 259

Adhesion of Two Cylindrical Particles to a Soft Membrane Tube
(University of Waterloo, 20120926)The interaction of nanoparticles with biological systems, especially interactions with cell membranes, has been a subject of active research due to its numerous applications in many areas of softmatter and biological ... 
Adventures in Holography
(University of Waterloo, 20140711)In this thesis, inspired by the holographic theories, we study a variety of interesting problems in gravity, condensed matter and cosmology. First, we explore the entanglement entropy of a general region in a theory of ... 
An ALMA View of Molecular Gas in Brightest Cluster Galaxies
(University of Waterloo, 20180925)In this thesis I use ALMA observations to map the distribution and kinematics of molecular gas in the brightest cluster galaxies of three galaxy clusters: 2A0335+096, RXJ0821+0752, and RXCJ15040248. The goal is to understand ... 
Amplitudes in the Spin Foam Approach to Quantum Gravity
(University of Waterloo, 20170731)In this thesis, we study a Spin Foam model for 4D Riemannian quantum gravity, and propose a new way of imposing the simplicity constraints that uses the recently developed holomorphic representation. Rather than imposing ... 
Applications of Adiabatic Approximation to One and Twoelectron Phenomena in Strong Laser Fields
(University of Waterloo, 20101220)The adiabatic approximation is a natural approach for the description of phenomena induced by low frequency laser radiation because the ratio of the laser frequency to the characteristic frequency of an atom or a molecule ... 
Applications of the Wormlike Chain Model in Polymer Physics: Selfconsistent Field Theory
(University of Waterloo, 20130430)The selfconsistent field theory (SCFT) has reveived a great success in prediction of the physical properties of a variety of polymeric systems in the recent two decades. However, the traditional SCFT is based on the ... 
Aspects of Nonlocality: from Particles to Black Holes
(University of Waterloo, 20160506)This dissertation is a collection of works on different aspects of the following subjects: causal setcontinuum correspondence, wave propagation on causal sets, nonlocal quantum field theory, potential connection between ... 
Aspects of Quantum Information and AdS/CFT Duality
(University of Waterloo, 20210517)This thesis considers four different aspects of quantum information, AdS/CFT duality, and the interplay between them. First, we study the holographic complexity conjectures in detail for rotating black holes. We focus ... 
Aspects of Scattering Amplitudes and Moduli Space Localization
(University of Waterloo, 20190819)We propose that intersection numbers of certain cohomology classes on the moduli space of genuszero Riemann surfaces with $n$ punctures, $\mathcal{M}_{0,n}$, compute treelevel scattering amplitudes in quantum field ... 
At the Corner of Space and Time
(University of Waterloo, 20191209)We perform a rigorous piecewiseflat discretization of classical general relativity in the firstorder formulation, in both 2+1 and 3+1 dimensions, carefully keeping track of curvature and torsion via holonomies. We show ... 
Augmenting Quantum Mechanics with Artificial Intelligence
(University of Waterloo, 20181204)The simulation of quantum matter with classical hardware plays a central role in the discovery and development of quantum manybody systems, with farreaching implications in condensed matter physics and quantum technologies. ... 
Biophysical Modelling of Antimicrobial Peptide’s Interactions with Phospholipid and Lipopolysaccharide Membranes
(University of Waterloo, 20190523)Antimicrobial peptides (AMPs) are naturallyoccurring peptide antibiotics. The way they work has inspired a vigorous search for optimized peptide antibiotics for fighting resistant bacteria. Cationic AMPs cleverly utilize ... 
Black Hole Thermodynamics and the Tunnelling Method for Particle Emission
(University of Waterloo, 20080829)The semiclassical black hole tunnelling method is a useful technique to calculate black hole temperature and understand black hole thermodynamics. I will investigate the black hole tunnelling method in detail. I will ... 
Born Geometry
(University of Waterloo, 20200421)In this thesis, we summarize the work which we authored or coauthored during our PhD studies and also present additional details and ideas that are not found elsewhere. The main topic is the study of Tduality in theoretical ... 
Canonical Structure and Conservation Laws of General Relativity on Null Surfaces and at Null Infinity
(University of Waterloo, 20210112)The first part of this thesis addresses the canonical structure of general relativity on generic null surfaces. The presymplectic potential of metric general relativity, evaluated on a null surface, is decomposed into ... 
Carbon nanotube electromechanical systems: Nonlinear dynamics and selfoscillation
(University of Waterloo, 20200513)This thesis is motivated by the many sensing applications of carbon nanotube (CNT) nanoelectromechanical systems (NEMS), both previous stateoftheart demonstrations and proposed new uses. This research is particularly ... 
Causal Models for a Quantum World
(University of Waterloo, 20160518)Quantum mechanics has achieved unparalleled success as an operational theory, describing a wide range of experiments to remarkable accuracy. However, the physical foundations on which it rests remain as puzzling as they ... 
Characterization and Control in Large Hilbert spaces.
(University of Waterloo, 20081203)Computational devices built on and exploiting quantum phenomena have the potential to revolutionize our understanding of computational complexity by being able to solve certain problems faster than the best known classical ... 
Characterization, Veriﬁcation and Control for Large Quantum Systems
(University of Waterloo, 20150331)Quantum information processing offers potential improvements to a wide range of computing endevaors, including cryptography, chemistry simulations and machine learning. The development of practical quantum information ... 
Characterizing Errors in Quantum Information Processors
(University of Waterloo, 20160512)Errorfree computation is an unattainable ideal, yet our world now contains many computers that appear errorfree to their users. That such things are possible is explained by sophisticated theorems that demonstrate the ...