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Showing 1 to 6 of 6 for “"Lorentz Violation"”.
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Radiative Corrections to and Connections Among Theories With Lorentz Violation and Time-Varying Couplings
<p>Different models containing Lorentz violation are studied in order to explore possible new physics beyond the standard model. In the electromagnetic sector, a time-variation in the fine structure constant &alpha is studied as a possible mechanism to generate Lorentz, CPT and gauge symmetry …
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Gravitational waves from a string cusp in Einstein-aether theory
… of this thesis is to look for a signature of Lorentz violation, hopefully observable, in the gravitational waves emitted by cosmic strings. Aspects of cosmic strings are reviewed, in particular how focused bursts of gravitational radiation are emitted when a cusp forms on the string. The same …
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Patterns of electro-magnetic response in topological semi-metals
… by a $n$-form which represents a source of Lorentz violation and can be read off from the location of the singular points in momentum space and the helicities/chiralities of the singularities. We motivate and derive effective response actions for the 2D and 3D Dirac semi-metals, the Weyl …
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Gravitational Waves and Inspiraling Compact Binaries in Alternative Theories of Gravity
… of alternative theories of gravity for violations of Lorentz invariance in gravitation, and investigate their impact on the propagation of gravitational waves. We show how such corrections map to the waveform observable by a gravitational-wave detector, and to the “parametrized …
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Effective Field Theories in Cosmology
… some basic tenets of General Relativity such as Lorentz invariance and the weak equivalence principle. We also employ effective field theory methods to explore the imprint that high energy physics can leave on the small departures from homogeneity and isotropy generated in the early universe.</p>
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Testing general relativity and cosmology with gravitational waves: polarizations, propagation speeds, and backgrounds
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms