Generating zeta with non-Abelian Vector Fields

Mindaugas Karciauskas

doi:10.1063/1.4734455

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arXiv · 1202.3133

Generating zeta with non-Abelian Vector Fields

Mindaugas Karciauskas

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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.

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Mindaugas Karciauskas. 2012-02-14. Generating zeta with non-Abelian Vector Fields. https://doi.org/10.1063/1.4734455

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