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Showing 1 to 20 of 419 for “"Relativity"”.
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Covariant thermodynamics & relativity
… within the context of the general theory of relativity. In particular, we address the problem of the `infinite' speed of propagation of thermal disturbances in a dissipative fluid. Although this problem is not new, its best known solution - the Israel and Stewart second order expansion - has …
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Relativity: A Writing Portfolio
Short fiction and poetry.
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Orbits in General Relativity
Made available in DSpace on 2014-12-09T18:33:59Z (GMT). No. of bitstreams: 1 6507102.pdf: 2246428 bytes, checksum: ca9c2283db88b9878524b6511c0b0d1c (MD5) Previous issue date: 1965
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Leveraging numerical relativity formulations for perturbative analysis: applications to quasinormal modes in general relativity
Numerical relativity has become an essential tool for studying highly dynamic and strong-field regimes of general relativity, enabling the simulation of compact object mergers, gravitational col-lapse, and other nonlinear phenomena. At the same time, perturbation theory provides a powerful …
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Defining gravitational singularities in general relativity
… have been a long-standing problem in general relativity. In all other fields of physics, singularities can be easily located and avoided; in general relativity, singularities have an impact on the creation of the manifold, but, by definition, are not even part of real spacetime. Moreover, all …
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Numerical relativity in black hole spacetimes
… of better techniques for the 3 + 1 numerical relativity study of black hole spacetimes. The main result of this thesis is the development of a new technique for avoiding singularities in such spacetimes. In this technique the slices are allowed to penetrate the black hole, but only the region …
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Gravitational wave extraction in numerical relativity
… of gravitational waves, a prediction of general relativity, is the merger of two black holes. To understand the generation and evolution of gravitational waves in such a case, extensive efforts have been made. One is the construction of highly sensitive detectors, which are likely to find …
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Frequency space analysis in General Relativity
… for the vacuum Einstein equations in General Relativity. The common theme is the use of frequency analysis as a tool to exploit fine structures within the partial differential equations. However, the two parts are structured so as to be read independently. The first part concerns the classical …
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Applications of Numerical Relativity Beyond Astrophysics
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 field is the breakthrough success in simulating the merger of binary black hole …
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Problems in cosmology and numerical relativity
… now become customary in the field of numerical relativity to couple high order finite difference schemes to mesh refinement algorithms. This approach combines the efficiency of local mesh refinement with the robustness and accuracy of higher order methods. To this end, different modifications of …
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Quantum information and thermodynamics of general relativity
We treat an Unruh-DeWitt detector as an open quantum system, with a quantum field playing the role of the environment, and evaluate the response of a uniformly accelerated detector for different types of interaction between the detector and the field. We derive the evolution equations for the …
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Negative Point Mass Singularities in General Relativity
First we review the definition of a negative point mass singularity. Then we examine the gravitational lensing effects of these singularities in isolation and with shear and convergence from continuous matter. We review the Inverse Mean Curvature Flow and use this flow to prove some new results …
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Approximations to Einstein's Equations of General Relativity
Made available in DSpace on 2014-12-05T21:50:10Z (GMT). No. of bitstreams: 1 5805393.pdf: 1843369 bytes, checksum: 924884b907c41e12c93dc58ab3f8d157 (MD5) Previous issue date: 1958
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Linguistic relativity: Loci and conditions of emergence
… Can language learning lead to linguistic relativity effects – the effect of the language(s) we speak on our cognition of non-verbal stimuli even without verbalization or preparation for verbalization using the relevant linguistic feature(s)? If yes, then what are the loci of such effects? …
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New approaches to higher-dimensional general relativity
This thesis considers various aspects of general relativity in more than four spacetime dimensions. Firstly, I review the generalization to higher dimensions of the algebraic classification of the Weyl tensor and the Newman-Penrose formalism. In four dimensions, these techniques have proved useful …
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Numerical relativity in higher-dimensional space-times
The study of general relativity in higher dimensions has proven to be a fruitful avenue of research, revealing new applications of the theory, for instance in understanding strongly coupled quantum field theories through the holographic principle, and proposing an explanation of the hierarchy …
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Numerical simulations of instabilities in general relativity
General relativity, one of the pillars of our understanding of the universe, has been a remarkably successful theory. It has stood the test of time for more than 100 years and has passed all experimental tests so far. Most recently, the LIGO collaboration made the first-ever direct detection of …
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