Computation of the Power Spectrum in Chaotic $1/4 \lambda \phi^4$ Inflation
Cosmology and Nongalactic Astrophysics
2015-06-03 v1
Abstract
The phase-integral approximation devised by Fr\"oman and Fr\"oman, is used for computing cosmological perturbations in the quartic chaotic inflationary model. The phase-integral formulas for the scalar power spectrum are explicitly obtained up to fifth order of the phase-integral approximation. As in previous reports [1-3], we point out that the accuracy of the phase-integral approximation compares favorably with the numerical results and those obtained using the slow-roll and uniform approximation methods.
Keywords
Cite
@article{arxiv.1112.1342,
title = {Computation of the Power Spectrum in Chaotic $1/4 \lambda \phi^4$ Inflation},
author = {Clara Rojas and Victor M. Villalba},
journal= {arXiv preprint arXiv:1112.1342},
year = {2015}
}
Comments
Accepted in JCAP (15 pages, 5 figures). arXiv admin note: substantial text overlap with arXiv:0904.4295