منابع مشابه
Recovering the Inflationary Potential and Primordial Power Spectrum With a Slow Roll Prior
We introduce a new method for applying an inflationary prior to a cosmological dataset that includes correlations between observables at arbitrary order in the slow roll expansion. The process is based on the inflationary flow equations, and the slow roll parameters appear explicitly in the cosmological parameter set. We contrast our method to other ways of imposing an inflationary prior on a c...
متن کاملSecond-order reconstruction of the inflationary potential.
To first order in the deviation from scale invariance the inflationary potential and its first two derivatives can be expressed in terms of the spectral indices of the scalar and tensor perturbations, n and nT , and their contributions to the variance of the quadrupole CBR temperature anisotropy, S and T . In addition, there is a “consistency relation” between these quantities: nT = −17 TS . We...
متن کاملNon-Gaussianity from Step Features in the Inflationary Potential
Peter Adshead, Cora Dvorkin, 2, 3 Wayne Hu, 4 and Eugene A. Lim Kavli Institute for Cosmological Physics, Enrico Fermi Institute, University of Chicago, Illinois 60637, USA Department of Physics, University of Chicago, Illinois 60637, USA School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540, USA Department of Astronomy & Astrophysics, University of Chicago, Illi...
متن کاملRecovering the inflationary potential and primordial power spectrum with a slow roll prior: methodology and application to WMAP three year data
We introduce a new method for applying an inflationary prior to a cosmological data set that includes relations between observables at arbitrary order in the slow roll expansion. The process is based on the inflationary flow equations, and the slow roll parameters appear explicitly in the cosmological parameter set. We contrast our method with other ways of imposing an inflationary prior on a c...
متن کاملA semi-classical inverse problem II: recovering the potential
This paper is the continuation of [6], where Victor Guillemin and I proved the following result: the Taylor expansion of a potential V (x) (x ∈ R) at a non degenerate critical point x0 of V , satisfying V (x0) 6= 0, is determined by the semi-classical spectrum of the associated Schrödinger operator near the corresponding critical value V (x0). Here, I prove results which are stronger in some as...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1993
ISSN: 0556-2821
DOI: 10.1103/physrevd.48.5539