Now showing items 576-595 of 777

    • The S-Matrix of Gauge and Gravity Theories and The Two-Black Hole Problem 

      Guevara, Alfredo (University of Waterloo, 2020-10-01)
      This thesis is devoted to diverse aspects of scattering amplitudes in gauge theory and gravity including interactions with matter particles. In Part I we focus on the applications of massive scattering amplitudes in gravity ...
    • Satellite Dynamics in Dark Matter Halos 

      Kamiab, Farbod (University of Waterloo, 2010-09-01)
      I have used an analytic model of tidal interactions to predict the evolution of a substructure in a static dark matter halo. Given the initial conditions of the satellite and background halo, the model predicts with high ...
    • Scattering Equations and S-Matrices 

      Yuan, Ye (University of Waterloo, 2015-06-25)
      We introduce a new formulation for the tree-level S-matrix in theories of massless particles. Sitting at the core of this formulation are the scattering equations, which yield a map from the kinematics of a scattering ...
    • A Search for Nearby Dwarf Galaxies 

      Xi, Chengyu (University of Waterloo, 2014-09-25)
      Dwarf galaxies can be used to trace invisible dark matter substructure. Studies of the properties of dwarf galaxy populations are crucial in solving the so-called ``Missing Satellite Problem'', and hold important implications ...
    • Searching for the Magnetic Interactions in the Rare Earth Pyrochlore Oxide Yb₂Ti₂O₇ 

      Thompson, Jordan (University of Waterloo, 2011-07-20)
      Various experiments on Yb₂Ti₂O₇ have shown evidence of strange magnetic behaviour at low temperatures. Specific heat measurements on powder samples of Yb₂Ti₂O₇ show evidence of a sharp peak, indicating the occurence of a ...
    • Security Analysis of Quantum Key Distribution: Methods and Applications 

      Lin, Jie (University of Waterloo, 2021-09-27)
      Quantum key distribution (QKD) can be proved to be secure by laws of quantum mechanics. In this thesis, we review security proof methods in Renner's framework and discuss numerical methods to calculate asymptotic and finite ...
    • The Security of Simplified Trusted Relays 

      Stacey, William (University of Waterloo, 2014-08-27)
      This thesis examines the security of performing quantum key distribution (QKD) with a simplified trusted relay (STR). The protocol carries out the quantum phase of a conventional trusted relay, however, reduces the required ...
    • Security proof methods for quantum key distribution protocols 

      Ferenczi, Agnes (University of Waterloo, 2013-04-26)
      In this thesis we develop practical tools for quantum key distribution (QKD) security proofs. We apply the tools to provide security proofs for several protocols, ranging from discrete variable protocols in high dimensions, ...
    • Security Proofs for Quantum Key Distribution Protocols by Numerical Approaches 

      Lin, Jie (University of Waterloo, 2017-10-25)
      This thesis applies numerical methods to analyze the security of quantum key distribution (QKD) protocols. The main theoretical problem in QKD security proofs is to calculate the secret key generation rate. Under certain ...
    • Segregation of chain ends to the surface of a polymer melt: effect of surface profile versus chain discreteness 

      Mahmoudi, Pendar; Matsen, Mark (Springer, 2016)
      Silberberg has argued that the surface of a polymer melt behaves like a reflecting boundary on the random-walk statistics of the polymers. Although this is approximately true, independent studies have shown that violations ...
    • Selected Experiments with Proteins at Solid-Liquid Interfaces 

      Teichroeb, Jonathan (University of Waterloo, 2008-12-12)
      This thesis describes a number of novel experiments contributing to the understanding of protein adsorption from both a fundamental and applied perspective. The first three papers involve the use of the localized surface ...
    • Selected topics in Computational Relativity 

      Mukherjee, Soham (University of Waterloo, 2022-08-18)
      This thesis addresses a collection of topics that are either directly related to, or have implications for, current challenges in computational relativity. In the first part, we explore a spacetime discretization method ...
    • Self-assembly of a binary mixture of particles and diblock copolymers 

      Lee, Jae Youn; Thompson, Russell B.; Jasnow, David; Balazs, Anna C. (Royal Society of Chemistry, 2003)
      Using theoretical models, we undertake the first investigation into the synergy and rich phase behavior that emerges when binary particle mixtures are blended with microphase- separating copolymers. We isolate an example ...
    • Self-Assembly of Amphiphilic Nanoparticle-Coil “Tadpole” Macromolecules 

      Lee, Jae Youn; Balazs, Anna C.; Thompson, Russell B.; Hill, Randall M. (American Chemical Society, 2004)
    • Self-Assembly of Amphiphilic Nanoparticle-Coil “Tadpole” Macromolecules 

      Lee, Jae Youn; Balazs, Anna C.; Thompson, Russell B.; Hill, Randall M. (American Chemical Society, 2004)
      There has been considerable fascination with the self-assembling behavior of amphiphilic chainlike molecules that range from short-chain surfactants to high molecular weight block copolymers. The self-assembly of simple ...
    • The Self-Assembly of Particles with Isotropic Interactions 

      Kier, von Konigslow (University of Waterloo, 2012-09-26)
      In recent years there has been much interest in the self-assembly of materials. Much of this research has been focused on the self-assembly of particles in solution (colloids), typically on the order of nanometres or ...
    • The Self-Assembly of Particles with Isotropic Interactions 

      Konigslow, K. von; Cardenas-Mendez, E. D.; Thompson, Russell (IOP publishing, 2013-07-03)
      A generic field-theoretic model for the self-assembly of particles with isotropic interactions, motivated by ideas in DNA-mediated colloidal assembly, is presented. A simplest possible system of colloids in explicit ...
    • The self-assembly of particles with isotropic interactions: Using DNA coated colloids to create designer nanomaterials 

      Thompson, R. B.; Dion, Shawn; von Konigslow, K. (AIP publishing, 2014-04-03)
      Self-consistent field theory equations are presented that are suitable for use as a coarse-grained model for DNA coated colloids, polymer-grafted nanoparticles and other systems with approximately isotropic interactions. ...
    • Semi-Analytic Radiatively Inefficient Accretion Flows in General Gravity 

      Georgiev, Boris (University of Waterloo, 2018-01-05)
      The Event Horizon Telescope is capable of observing black holes on event-horizon scales and we can use it to explore deviations from General Relativity. We replicate the results of a previous study using a Newtonian ...
    • Sensing the shape of spacetime: detector response and entanglement harvesting in curved space 

      Ng, Keith (University of Waterloo, 2019-01-24)
      This thesis seeks to understand what information Unruh-DeWitt detectors can gain about the structure of spacetime. By coupling to the quantum state of a field on a curved space, the detectors can gain information about ...


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