Questions on calculation of primordial power spectrum with large spikes: the resonance model case
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2023/04/011
Abstract: Inflationary models predicting a scale-dependent large amplification of the density perturbations have recently attracted a lot of attention because the amplified perturbations can seed a sizable amount of primordial black holes (PBHs) and stochastic background… read more here.
Keywords: loop corrections; power spectrum; questions calculation; power ... See more keywords
Two-loop corrections to Starobinsky-Higgs inflation
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DOI: 10.1103/physrevd.98.103524
Abstract: Higgs inflation and $R^2$-inflation (Starobinsky model) are two limits of the same quantum model, hereafter called Starobinsky-Higgs. We analyse the two-loop action of the Higgs-like scalar $\phi$ in the presence of: 1) non-minimal coupling ($\xi$)… read more here.
Keywords: two loop; loop corrections; starobinsky higgs; phi ... See more keywords
Bias loop corrections to the galaxy bispectrum
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.99.123514
Abstract: The combination of the power spectrum and bispectrum is a powerful way of breaking degeneracies between galaxy bias and cosmological parameters, enabling us to maximize the constraining power from galaxy surveys. Recent cosmological constraints treat… read more here.
Keywords: bispectrum; spectrum bispectrum; bias; loop corrections ... See more keywords