Bartnik and McKinnon generalize from the Abelian gauge group to the non-Abelian
group and thereby find these unexpected particle-like solutions. One can consider, as does Ref. [194] (see
Section IIp), these globally regular solutions (and their generalizations to
for
) as gauged
boson stars even though these contain no scalar field. One can instead explicitly include a scalar field
doublet coupled to the Yang–Mills gauge field [39] as perhaps a more direct generalization of the (
)
charged boson stars discussed in Section 3.3.
Ref. [74] studies BSs formed from a gauge condensate of an gauge field, and Ref. [41
] extends
the Bartnik–McKinnon solutions to conformal gravity with a Higgs field [41].
http://www.livingreviews.org/lrr-2012-6 |
Living Rev. Relativity 15, (2012), 6
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