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Cosmological monopoles and non-Abelian black holes

Authors
Journal
Nuclear Physics B
0550-3213
Publisher
Elsevier
Publication Date
Volume
763
Identifiers
DOI: 10.1016/j.nuclphysb.2006.11.011
Keywords
  • Particle Physics
Disciplines
  • Astronomy
  • Physics

Abstract

Abstract We discuss magnetic monopole solutions of the Einstein–Yang–Mills–Higgs equations with a positive cosmological constant. These configurations approach asymptotically the de Sitter spacetime background and exist only for a nonzero Higgs potential. We find that the total mass of the solutions within the cosmological horizon is finite. However, their mass evaluated by using the surface counterterm method outside the cosmological horizon at early/late time infinity generically diverges. Magnetic monopole solutions with finite mass and non-integer charge exist however in a truncation of the theory with a vanishing Higgs field. Both solutions with a regular origin and cosmological black holes are studied, special attention being paid to the computation of the global charges.

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