Continuous spectrum on cosmological collider
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2023/04/002
Abstract: We study the effects of a massive field with a continuous spectrum (continuum isocurvaton) on the inflationary bispectrum in the squeezed limit. As a concrete example, we extend the quasi-single field inflation model to include… read more here.
Keywords: bispectrum; continuum isocurvaton; spectrum cosmological; continuous spectrum ... See more keywords
Running of the spectrum of cosmological perturbations in string gas cosmology
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.96.123513
Abstract: We compute the running of the spectrum of cosmological perturbations in String Gas Cosmology, making use of a smooth parametrization of the transition between the early Hagedorn phase and the later radiation phase. We find… read more here.
Keywords: spectrum cosmological; cosmology; perturbations string; cosmological perturbations ... See more keywords