Second Order General Slow-Roll Power Spectrum
High Energy Physics - Phenomenology
2008-11-26 v3 Astrophysics
Abstract
Recent combined results from the Wilkinson Microwave Anisotropy Probe (WMAP) and Sloan Digital Sky Survey (SDSS) provide a remarkable set of data which requires more accurate and general investigation. Here we derive formulae for the power spectrum P(k) of the density perturbations produced during inflation in the general slow-roll approximation with second order corrections. Also, using the result, we derive the power spectrum in the standard slow-roll picture with previously unknown third order corrections.
Cite
@article{arxiv.hep-ph/0405155,
title = {Second Order General Slow-Roll Power Spectrum},
author = {Jeongyeol Choe and Jinn-Ouk Gong and Ewan D. Stewart},
journal= {arXiv preprint arXiv:hep-ph/0405155},
year = {2008}
}
Comments
11 pages, 1 figure ; A typo in Eq. (38) is fixed ; References expanded and a note added