Phys. Rev. Lett. 83, 5218–5221 (1999)Some Remarks on Gravitational Global MonopolesReceived 18 August 1999; published in the issue dated 20 December 1999 Using mainly analytical arguments, we derive the exact relation ηmax = √3/8π for the maximal vacuum value of the Higgs field for static gravitational global monopoles. For this value, the global monopole bifurcates with the de Sitter solution obtained for vanishing Higgs field. In addition, we analyze the stability properties of the solutions. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.83.5218
DOI:
10.1103/PhysRevLett.83.5218
PACS:
04.40.-b, 11.30.Qc, 14.80.Hv, 98.80.Cq
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