Generating zeta with non-Abelian Vector Fields
Cosmology and Nongalactic Astrophysics
2015-06-04 v1 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
In this paper the generation of the primordial curvature perturbation by vector fields of general non-Abelian groups is discussed. We show that non-Gaussianity of the perturbation is dominated by contributions from superhorizon evolution of fields. Also we find that non-Abelian vector fields of reasonably large groups can generate the total of the curvature perturbation without violating observational constraints on the angular modulation of the spectrum.
Cite
@article{arxiv.1202.3133,
title = {Generating zeta with non-Abelian Vector Fields},
author = {Mindaugas Karciauskas},
journal= {arXiv preprint arXiv:1202.3133},
year = {2015}
}
Comments
4 pages. Contribution to the ERE2011 Spanish Relativity Meeting, Madrid 2011