• Risk associated with H2S evolution in sour aquifers during CO2 injection 

  Ghaderi, Seyyed M.; Keith, David W.; Lavoie, Rob; Leonenko, Yuri (Elsevier, 2011)

  Many aquifers suitable for CO2 sequestration contain measurable concentration of dissolved non-hydrocarbon species. In this paper, the compositional modelling of the CO2 injection into aquifers that contain dissolved ...

• Feasibility of Injecting Large Volumes of CO2 into Aquifers 

  Ghaderi, Seyyed M.; Keith, David W.; Leonenko, Yuri (Elsevier, 2009-02)

  Although it is recognized that deep aquifers offer a very large potential storage capacity for CO2 sequestration it is not clear how to fill the storage with a large volume of CO2 in a relatively short period of time. The ...

• Towards simulating 2D effects in lattice gauge theories on a quantum computer 

  Paulson, Daniel (University of Waterloo, 2020-10-26)

  Quantum Field Theories (QFTs) are the most successful theories for describing nature at its most fundamental level. Despite the fact that QFTs are capable of predicting a wide range of phenomena, obtaining solutions to ...

• Experimental and theoretical investigations of radio-frequency and optical trapping potentials for atomic ions 

  Sajjan, Manas (University of Waterloo, 2020-10-08)

  Over the years, trapped ion have emerged as one of the premier candidates for universal quantum simulation due to its long coherence time, low initialization and detection errors, robust high-fidelity gate sets and fully ...

• 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 ...

• Quantum Black Holes in the Sky 

  Wang, Qingwen (University of Waterloo, 2020-09-30)

  Black Holes are possibly the most enigmatic objects in our Universe. From their detection in gravitational waves upon their mergers, to their snapshot eating at the centres of galaxies, black hole astrophysics has undergone ...

• Unifying Thermal Big Bang and Black Holes 

  Hergott, Samantha (University of Waterloo, 2020-09-30)

  Theories that stand the test of constant bombardment of new (and old) ideas, observations and unexplained phenomena are hard to come by. Despite countless attempts over many years of trying, cosmology and gravitational ...

• A Study of Electronic Nematicity in Cuprate Superconductors using Resonant Soft X-Ray Scattering 

  Gupta, Naman Kumar (University of Waterloo, 2020-09-29)

  The cuprate high-temperature superconductors involve a complex interplay between different structural and electronic symmetry-breaking phases. In the last decade, rotational and translational symmetry-breaking phases — ...

• Solvent-Induced Nanoscopic Surface Morphology on Polymer Thin Films 

  Trumpour, Tiana (University of Waterloo, 2020-09-29)

  Polymer thin films are studied extensively due to their important applications in the fields of material coatings, biomedical devices, nanoelectronics, and more. Many of these applications directly depend on the surface ...

• Towards Practical Hybrid Quantum / Classical Computing 

  Edwards, Marcus (University of Waterloo, 2020-09-28)

  Quantum computing is in a critical phase where theoretical schemes and protocols are now being implemented in the real world for the first time. Experimental implementations can help us solidify ideas, and can also complicate ...

• The Shape of Dark Matter Haloes: Results from Weak Lensing 

  Robison, Bailey (University of Waterloo, 2020-09-25)

  Dark matter haloes are expected to have a triaxial shape, appearing elliptical in projection. Understanding the orientation of these dark matter haloes, and how they are aligned, has implications for theories of structure ...

• Nonlinear Behavior of Unstable Black Holes in Anti-de Sitter Spacetimes 

  Bosch Gomez, Pablo (University of Waterloo, 2020-09-25)

  The nonlinear dynamics of black holes is an increasingly relevant topic of which little is known. In this thesis, we study the full nonlinear dynamics of black holes, as well as their linear behavior, and combine them ...

• Vacuum and Optical Designs for an Open-access Trapped Ion Quantum Processor 

  Greenberg, Noah (University of Waterloo, 2020-09-21)

  This thesis focuses on the design of a vacuum system for a trapped ion quantum computer that will house an advanced ion chip trap from Sandia National Laboratories, capable of performing high fidelity operations on up to ...

• Studies of Reentrance in Pyrochlore Magnets and Machine Learning of Quenched Gauge Symmetries 

  Pereira, Darren (University of Waterloo, 2020-09-18)

  In this thesis, we present two explorations: (1) understanding the mechanism causing reentrant behavior in the rare-earth pyrochlore magnet Er2Sn2O7, and (2) determining if unsupervised machine learning is capable of ...

• Emergent Fields, Flat Bands and Phase Competition: A Study in Magnetic Pyrochlore Systems 

  Mukherjee, Aritro (University of Waterloo, 2020-09-18)

  We investigate spins models on the pyrochlore and the breathing pyrochlore lattice. Specifically, we study polarized neutron scattering in classical spin ice modelled via Ising spins with anti-ferromagnetic interactions. ...

• Generalized holographic dualities for metric gravity & Quantum geometry based on area variables 

  Kurankyi Asante, Seth (University of Waterloo, 2020-09-18)

  Holography holds promise for simplifying computations in quantum gravity. In part I of this thesis, we construct holographic boundary theories for linearized gravity, for a general family of finite or quasi-local boundaries, ...

• Application of the Flag-State Squashing Model to Numerical Quantum Key Distribution Security Analysis 

  Li, Nicky Kai Hong (University of Waterloo, 2020-09-18)

  The squashing model proof technique is a powerful tool in proving security of quantum key distribution (QKD) protocols since it reduces the dimension of the associated computational problem from infinite to finite. In the ...

• Messier 87: A Laboratory for Exploring AGN Variability using the Event Horizon Telescope 

  Jeter, Britton (University of Waterloo, 2020-09-17)

  At a distance of 50 million light years at the heart of the Virgo cluster, lies the giant elliptical galaxy Messier 87. This galaxy has at its center a brilliant relativistic jet, observable at all wavelengths, and at the ...

• Interpolated Collision Model Formalism 

  Grimmer, Daniel (University of Waterloo, 2020-09-16)

  The dynamics of open quantum systems (i.e., of quantum systems interacting with an uncontrolled environment) forms the basis of numerous active areas of research from quantum thermodynamics to quantum computing. One approach ...

• Tunable Coupler in Superconducting Circuits and Impedance Engineering for Josephson Parametric Amplifier 

  Sun, Huichen (University of Waterloo, 2020-09-04)

  In this thesis, we study two topics on superconducting circuits. The first topic is the tunable coupler for resonators. This coupler is implemented with a superconducting circuit coupling with resonators in the dispersive ...

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