COSMIC MICROWAVE BACKGROUND ANISOTROPIES INDUCED BY GLOBAL SCALAR FIELDS - THE LARGE N-LIMIT

Authors
KUNZ M DURRER R
Citation
M. Kunz et R. Durrer, COSMIC MICROWAVE BACKGROUND ANISOTROPIES INDUCED BY GLOBAL SCALAR FIELDS - THE LARGE N-LIMIT, Physical review. D. Particles and fields, 55(8), 1997, pp. 4516-4520
Citations number
8
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
55
Issue
8
Year of publication
1997
Pages
4516 - 4520
Database
ISI
SICI code
0556-2821(1997)55:8<4516:CMBAIB>2.0.ZU;2-G
Abstract
We present an analysis of cosmic microwave background (CMB) anisotropi es induced by global scalar fields in the large N Limit. In this limit , the CMB anisotropy spectrum can be determined without cumbersome 3D simulations. We determine the source functions and their unequal time correlation functions and show that they are quite similar to the corr esponding functions in the texture model. This leads us to the conclus ion that the large N limit provides a ''cheap approximation'' to the t exture model of structure formation.