Browsing Theses by Subject "Gravity"
Now showing items 1-6 of 6
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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 ... -
Explorations of Black Hole Thermodynamics in de Sitter Spacetime
(University of Waterloo, 2019-01-23)In this thesis I map out two approaches that are foundational to studying black hole thermodynamics in de Sitter spacetime. The first is to understand the "thermodynamic volume" of cosmological horizons in isolation. ... -
Novel Approaches to Gravity Scattering Amplitudes
(University of Waterloo, 2014-03-14)Quantum Field Theory (QFT) provides the essential background for formulating the standard model of elementary particles and, moreover, practically all other theories attempting to explore the physical laws of nature at the ... -
Peculiar Velocities and Large Scale Flows as Probes of Gravity, ΛCDM and the Growth of Structure over Cosmic Time
(University of Waterloo, 2012-09-28)Peculiar velocities are possibly the most powerful probes of very large-scale mass density fluctuations in the nearby Universe. When coupled with a density field they also can constrain the growth factor of the universe ... -
Photon Rings and Shadow Size for General Integrable Spacetimes
(University of Waterloo, 2023-08-08)According to the no-hair theorem, the unique characteristics of astrophysical black holes are their masses and spins. However, recent observations from the Event Horizon Telescope (EHT) images of M87 and Sgr A* have ... -
Shape dynamics and Mach's principles: Gravity from conformal geometrodynamics
(University of Waterloo, 2011-08-26)We develop a new approach to classical gravity starting from Mach's principles and the idea that the local shape of spatial configurations is fundamental. This new theory, shape dynamics, is equivalent to general relativity ...