de Sitter/anti-de Sitter global monopoles

2003/04/30 by Bruno Bertrand, Yves Brihaye, Betti Hartmann · 23 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmological constant #Cosmology and Gravitation Theories #De Sitter space #De Sitter universe #Field (mathematics) #Gravitation #Gravitational constant #Metric (unit) #Noncommutative and Quantum Gravity Theories #Sign (mathematics) #de Sitter–Schwarzschild metric #gr-qc #hep-th

paper · pdf · doi:10.1088/0264-9381/20/20/312

published in Classical and Quantum Gravity 20(20), 4495-4502 (IOP Publishing) · 8 Revtex pages, 4 PS figures; numerical results considerably extended,references added

arxiv created 2003/06/30 · openalex publication_date 2003/09/16 · arxiv updated 2010/04/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We consider global monopoles in asymptotic de Sitter/anti-de Sitter spacetime. We present the asymptotic behaviour of the metric and Goldstone field function which is confirmed by our numerical analysis. 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 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 cannot render a positive mass of the global monopole.

Citations

• Measurements of Ω and Λ from 42 High‐Redshift Supernovae
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• The dS/CFT correspondence
• The large N limit of superconformal field theories and supergravity

Cited by

• The deflection angle of a gravitational source with a global monopole in the strong field limit
• Isotropic extensions of the vacuum solutions in general relativity