Global ETD Search
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Showing 1 to 4 of 4 for “"Galileon"”.
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Vector-Galileon-Tensor theories of gravity
… theory of gravity with a potential and a Galileon-motivated interaction terms is presented. The evolution of vector field self interactions that are relatively related to Galileon fields throughout the expansion history of the universe is considered and a classification of the parameters M …
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Aspects of Screened Modified Gravity
… exhibit screening are presented. These are the Galileon, K-mouflage and Chameleon models. In this thesis we investigate several aspects of these models. We study astrophysical black holes in Galileon and K-mouflage theories. The no-hair theorem of General Relativity states that, under certain …
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The Effective Field Theory Approach to Fluid Dynamics, Modified Gravity Theories, and Cosmology
… models, --- the chameleon like theories and the Galileon theory, --- and perform a few reliability checks for their qualifications as modified gravity theories. Furthermore, guiled by the EFT spirit, we develop a cosmological model where primordial inflation is driven by a `solid', defined, in a …
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NEW GRAVITATIONAL INTERACTIONS IN COSMOLOGY —- FROM EFFECTIVE FIELD THEORY TO OBSERVATION
… the non-linear sigma model and the special galileon theory when there are mass scales. Finally, I describe work on the observational opportunities presented by the new era of multi-messenger cosmology. I focus on Pulsar Timing Array (PTA) systems, discussing their roles in gravitational wave …