<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Impact of Gravitational Waves from First-Order Phase Transitions on Structure Formation"^^ . "In this thesis we investigate the possibility that gravitational waves emitted from a\r\nfirst-order phase transition exhibit enough power to alter or generate fluctuations in the\r\nprimordial plasma of the early universe and in turn imprint new features into the matter\r\npower spectrum. We approach this task by performing a second order perturbative\r\nexpansion of two coupled non-linear equations that monitor the evolution of energy\r\ndensity gradients in the 1+3 covariant formulation of cosmology. As a result, we find that\r\nadiabatic density fluctuations at second order can be generated from inhomogeneities\r\nin the gravitational wave energy density on sub-horizon scales. We interpret these\r\nfluctuations as baryon acoustic oscillations seeded by gravity radiation and derive their\r\ntransferfunction to study their impact on the matter power spectrum. Strength and\r\nscale of the imprinted signatures depend on three phase transition parameters, namely\r\nthe latent heat, the duration and the time at which gravitational waves are released.\r\nThe amplitude of the signatures is limited by the cosmic variance bound on the matter\r\npower spectrum. We use this constraint to deduce limits for these three parameters and\r\ntranslate them into a new exclusion region for the relic stochastic gravitational wave\r\nbackground today. Finally, we discuss our results in the context of first-order phase\r\ntransitions occurring in particle models."^^ . "2021" . . . . . . . "Christian"^^ . "Döring"^^ . "Christian Döring"^^ . . . . . . "Impact of Gravitational Waves from First-Order Phase Transitions on Structure Formation (PDF)"^^ . . . "Thesis.pdf"^^ . . . "Impact of Gravitational Waves from First-Order Phase Transitions on Structure Formation (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Impact of Gravitational Waves from First-Order Phase Transitions on Structure Formation (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Impact of Gravitational Waves from First-Order Phase Transitions on Structure Formation (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Impact of Gravitational Waves from First-Order Phase Transitions on Structure Formation (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Impact of Gravitational Waves from First-Order Phase Transitions on Structure Formation (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #30841 \n\nImpact of Gravitational Waves from First-Order Phase Transitions on Structure Formation\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .