Browsing Physics and Astronomy by Title
Now showing items 30-49 of 768
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Aspects of Nonlocality: from Particles to Black Holes
(University of Waterloo, 2016-05-06)This dissertation is a collection of works on different aspects of the following subjects: causal set--continuum correspondence, wave propagation on causal sets, nonlocal quantum field theory, potential connection between ... -
Aspects of Quantum Field Theory with Boundary Conditions
(University of Waterloo, 2019-08-02)This thesis has two modest goals. The primary goal is to deliver three results involving particle detectors interacting with a quantum field in presence of non-trivial boundary conditions (Dirichlet, Neumann, periodic; ... -
Aspects of Quantum Information and AdS/CFT Duality
(University of Waterloo, 2021-05-17)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, 2019-08-19)We propose that intersection numbers of certain cohomology classes on the moduli space of genus-zero Riemann surfaces with $n$ punctures, $\mathcal{M}_{0,n}$, compute tree-level scattering amplitudes in quantum field ... -
Assessing the Accuracy of Cosmological Parameters Estimated from Velocity – Density Comparisons
(University of Waterloo, 2024-01-10)A promising method for measuring the cosmological parameter combination fσ₈ is to compare observed peculiar velocities with peculiar velocities predicted from a galaxy density field using linear perturbation theory, known ... -
Assessing the Practicality of a Simple Multi-node Quantum Repeater
(University of Waterloo, 2017-10-25)This thesis assesses the theoretical performance of a realistic multi-node quantum repeater that is implementable with current technology. A quantum repeater, by definition, allows for communication rates in a channel to ... -
At the Corner of Space and Time
(University of Waterloo, 2019-12-09)We perform a rigorous piecewise-flat discretization of classical general relativity in the first-order formulation, in both 2+1 and 3+1 dimensions, carefully keeping track of curvature and torsion via holonomies. We show ... -
Atomic Force Microscopy Study of Model Lipid Monolayers
(University of Waterloo, 2012-09-26)Alzheimer's Disease (AD) is a neurodegenerative disorder that is prevalent among the elderly population. Aß protein has been heavily implicated in the pathogenesis of AD. This protein in its fibrillar form is a major ... -
Atomic shell structure from an orbital-free-related density-functional-theory Pauli potential
(American Physical Society, 2020-07)Polymer self-consistent field theory techniques are used to find radial electron densities and total binding energies for isolated atoms. Quantum particles are modeled as Gaussian threads with ring-polymer architecture in ... -
Atomic Shell Structure in a Ring Polymer Formulation of Orbital-Free Density Functional Theory
(University of Waterloo, 2022-08-18)An alternative approach to orbital-free density functional theory based on self-consistent field theory for ring polymers is proposed and applied to isolated atoms on the periodic table in their ground-state. Using a ... -
Augmenting Quantum Mechanics with Artificial Intelligence
(University of Waterloo, 2018-12-04)The simulation of quantum matter with classical hardware plays a central role in the discovery and development of quantum many-body systems, with far-reaching implications in condensed matter physics and quantum technologies. ... -
Benchmarking a self-consistent field theory for small amphiphilic molecules
(RSC publishing, 2012-08-14)A minimalist self-consistent field theory for small amphiphilic molecules is presented. The equations for this model are less involved than those for block copolymers and are easily implemented computationally. A new ... -
Beyond General Relativity: New Structure and Stability Predictions from Modified Gravity and High-Density Interaction Models
(University of Waterloo, 2022-09-29)In this thesis a number of topics are explored in an attempt to further understand gravitation and highly dense matter on a fundamental level. The notion of “quark stars” (QS), hypothetical compact stars composed of quark ... -
Bichromatic dressing of Rydberg atoms and on the correctness of many-mode Floquet theory
(University of Waterloo, 2020-01-20)Many-mode Floquet theory [T.-S. Ho, S.-I. Chu, and J. V. Tietz, Chem. Phys. Lett. 96, 464 (1983)] was designed as an extension of Floquet theory suitable for solving the time-dependent Schrodinger equation with multiple ... -
Bidirectional mapping between self-consistent field theory and molecular dynamics
(AIP Publishing, 2007-10-08)A bidirectional mapping scheme that bridges particle-based and field-based descriptions for polymers is presented. Initial application is made to immiscible homopolymer blends. The forward mapping (upscaling) approach ... -
Biophysical Modelling of Antimicrobial Peptide’s Interactions with Phospholipid and Lipopolysaccharide Membranes
(University of Waterloo, 2019-05-23)Antimicrobial peptides (AMPs) are naturally-occurring 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 dynamics in Effective Field Theory extensions to General Relativity
(University of Waterloo, 2023-09-22)This thesis aims to develop and implement mathematical and numerical techniques to enable the study of deviations from General Relativity (GR) in the nonlinear regime. The focus is on studying the nonlinear dynamics of ... -
The black hole information paradox in a brane world
(University of Waterloo, 2023-06-28)Recent progress in our understanding of the black hole information paradox has led to a new prescription for calculating entanglement entropy, which involves special subsystems in regions where gravity is dynamical, called ... -
Black Hole Thermodynamics and the Tunnelling Method for Particle Emission
(University of Waterloo, 2008-08-29)The semi-classical 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 ... -
Black holes in cosmological spacetimes and alternative theories of gravity
(University of Waterloo, 2023-08-09)This thesis is dedicated to the study of spacetimes surrounding black holes within the context of cosmology, high energy physics and modified theories of gravity. We do this by applying and adapting modern numerical ...