African University of Science and Technology: Recent submissions
Now showing items 461-480 of 4790
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Topics in Computing with Quantum Oracles and Higher-Dimensional Many-Body Systems
(University of CambridgeDepartment of Applied Mathematics and Theoretical PhysicsTrinity College, 2017-06-08)Since they were first envisioned, quantum computers have oft been portrayed as devices of limitless power, able to perform calculations in a mere instant that would take current computers years to determine. This is, of ...
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On vortex rings impacting a sharply-stratified interface
(University of CambridgeDepartment of Applied Mathematics and Theoretical PhysicsHughes Hall, 2017-06-14)This thesis presents an investigation into the dynamics of vortex rings impacting a sharply-stratified density interface. This problem has a long history and is important for understanding how individual eddies in stratified ...
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An experimental study of the spread of buoyant water into a rotating environment
(University of CambridgeDepartment of Applied Maths and Theoretical PhysicsQueens', 2017-05-01)This thesis examines previously unresolved issues regarding the fluid dynamics of the spread of buoyant water into a rotating environment. We focus in particular on the role that finite potential vorticity and background ...
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Preconditioned ADMM with nonlinear operator constraint
(2016-01-01)
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Violating the Weak Cosmic Censorship Conjecture in Four-Dimensional Anti-de Sitter Space.
(American Physical SocietyPhysical review letters, 2017-05-02)e consider time-dependent solutions of the Einstein-Maxwell equations using anti–de Sitter (AdS) boundary conditions, and provide the first counterexample to the weak cosmic censorship conjecture in four spacetime dimensions. ...
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Applications of Numerical Relativity Beyond Astrophysics
(Department of Applied Mathematics and Theoretical Physics, University of CambridgeUniversity of CambridgeDepartment of Applied Mathematics and Theoretical PhysicsEmmanuel College, 2017)Numerical relativity has proven to be a successful and robust tool for non-perturbative studies of gravitational phenomena in the highly dynamical and/or non-linear regime. Perhaps the most prominent achievement in the ...
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Source modelling at the dawn of gravitational-wave astronomy
(Department of Applied Mathematics and Theoretical Physics, University of CambridgeUniversity of CambridgeDepartment of Applied Mathematics and Theoretical PhysicsDarwin College, 2016-11-08)The age of gravitational-wave astronomy has begun. Gravitational waves are propagating spacetime perturbations ($\textit{“ripples in the fabric of space-time”}$) predicted by Einstein’s theory of General Relativity. These ...
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Modelling the effects on building temperatures of phase change materials
(Department of Applied Mathematics and Theoretical Physics, University of CambridgeUniversity of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2016-11-08)In this thesis, three problems motivated by the possibility of use of phase change materials in buildings are presented. First, a model for the response of phase change material (PCM) to a varying room temperature is ...
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Dynamical and radiative processes in the Upper Troposphere/Lower Stratosphere
(Department of Applied Mathematics and Theoretical Physics, University of CambridgeUniversity of CambridgeDepartment of Applied Mathematics and Theoretical PhysicsCorpus Christi College, 2016-06-28)The overall aim of this thesis is to gain a better understanding of certain key attributes and processes in the Upper Troposphere/Lower Stratosphere (UTLS). This work involves exploring the interactions between radiation ...
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Numerical analysis of the Fokas method in two and three dimensions
(Department of Applied Mathematics and Theoretical Physics, University of CambridgeUniversity of CambridgeDepartment of Applied Mathematics and Theoretical PhysicsSt Edmund's College, 2016-10-05)This thesis considers the numerical solution to elliptic boundary value problems (BVPs) in convex domains. Specifically we look at the two-dimensional problem in a polygon, and the three dimensional problem in a polyhedron. ...