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28 March 2024
 
  » arxiv » hep-th/0304026

 Article overview


de Sitter/ Anti-de Sitter global monopoles
Bruno Bertrand ; Yves Brihaye ; Betti Hartmann ;
Date 3 Apr 2003
Journal Class.Quant.Grav. 20 (2003) 4173-4180
Subject hep-th gr-qc
AffiliationUniversity of Mons, Belgium), Yves Brihaye (University of Mons, Belgium) and Betti Hartmann (University of Durham, UK
AbstractWe 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.
Source arXiv, hep-th/0304026
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