Bianchi cosmologies with $p$-form gauge fields
Abstract
In this paper the dynamics of free gauge fields in Bianchi type I-VII space-times is investigated. The general equations for a matter sector consisting of a -form field strength (), a cosmological constant (-form) and perfect fluid in Bianchi type I-VII space-times are computed using the orthonormal frame method. The number of independent components of a -form in all Bianchi types I-IX are derived and, by means of the dynamical systems approach, the behaviour of such fields in Bianchi type I and V are studied. Both a local and a global analysis are performed and strong global results regarding the general behaviour are obtained. New self-similar cosmological solutions appear both in Bianchi type I and Bianchi type V, in particular, a one-parameter family of self-similar solutions,"Wonderland ()" appears generally in type V and in type I for . Depending on the value of the equation of state parameter other new stable solutions are also found ("The Rope" and "The Edge") containing a purely spatial field strength that rotates relative to the co-moving inertial tetrad. Using monotone functions, global results are given and the conditions under which exact solutions are (global) attractors are found.
Cite
@article{arxiv.1712.08752,
title = {Bianchi cosmologies with $p$-form gauge fields},
author = {Ben David Normann and Sigbjørn Hervik and Angelo Ricciardone and Mikjel Thorsrud},
journal= {arXiv preprint arXiv:1712.08752},
year = {2018}
}
Comments
42 pages, 6 figures, 6 tables in text. V2: minor changes, matches the version published in CQG