Gravitationally coupled magnetic monopole and conformal symmetry breaking

Details Gravitationally coupled magnetic monopole and conformal symmetry breaking Gravitationally coupled magnetic monopole and conformal symmetry breaking

2009-01-29

arxiv.org/abs/0901.4583v1

Can.J.Phys.87:251-254,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Theory Canada IV conference proceeding; to appear in Can. J. Phys

Scientific paper

10.1139/P08-131

We consider a Georgi-Glashow model conformally coupled to gravity. The conformally invariant action includes a triplet of scalar fields and SO(3) non-Abelian gauge fields. However, the usual mass term $\mu^2 \phi^2$ is forbidden by the symmetry and this role is now played by the conformal coupling of the Ricci scalar to the scalar fields. Spontaneous symmetry breaking occurs via gravitation. The spherically symmetric solutions correspond to localized solitons (magnetic monopoles) in asymptotically anti-de-Sitter (AdS) space-time and the metric outside the core of the monopole is found to be Schwarzschild-AdS. Though conformal symmetry excludes the Einstein-Hilbert term in the original action, it emerges in the effective action after spontaneous symmetry breaking and dominates the low-energy/long-distance regime outside the core of the monopole.

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