de Sitter/ Anti-de Sitter global monopoles

Details de Sitter/ Anti-de Sitter global monopoles de Sitter/ Anti-de Sitter global monopoles

2003-04-03

arxiv.org/abs/hep-th/0304026v2

Class.Quant.Grav.20:4495-4502,2003

Physics

High Energy Physics

High Energy Physics - Theory

8 Revtex pages, 4 PS figures; numerical results considerably extended,references added

Scientific paper

10.1088/0264-9381/20/20/312

We consider global monopoles in asymptotic de Sitter/ Anti- de Sitter space-time. We present the by our numerical analysis confirmed asymptotic behaviour of the metric and Goldstone field functions. We find that the appearance of horizons in this model depends strongly on the sign and value of the cosmological constant as well as on the value of the gravitational coupling. In Anti-de Sitter (AdS) space, we find that for a fixed value of the cosmological constant, global monopoles without horizons exist only up to a critical value of the gravitational coupling. Moreover, we observe (in contrast to another recent study) that the introduction of a cosmological constant can NOT render a positive mass of the global monopole.

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