1995/04/30 by Arthur Kosowsky, Michael S. Turner · 10 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Galaxies: Formation, Evolution, Phenomena #astro-ph #hep-ph
paper · pdf · doi:10.1103/physrevd.52.r1739
published as Phys.Rev.D52:1739-1743,1995 · Discussion of calculation clarified; error corrected which reduces estimated effect for chaotic inflation
arxiv created 1995/05/23 · openalex publication_date 1995/08/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/02
Accurate (\ensuremath\lesssim1%) predictions for the anisotropy of the cosmic background radiation (CBR) are essential for using future high-resolution (\ensuremath\lesssim1\ifmmode^∘\else\textdegree\fi) CBR maps to test cosmological models. In many inflationary models the variation (``running'') of the spectral index of the spectrum of density perturbations is a significant effect and leads to changes of around 1--10 % in the CBR power spectrum. We propose a general method for taking running into account which uses the derivative of the spectral index (dn/dlnk). Conversely, high-resolution CBR maps may be able to determine dn/dlnk, giving important information about the inflationary potential.