Global monopoles, cosmological constant and maximal mass conjecture

Details Global monopoles, cosmological constant and maximal mass conjecture Global monopoles, cosmological constant and maximal mass conjecture

2005-11-30

arxiv.org/abs/hep-th/0511305v2

Phys.Rev.D74:025009,2006

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, 7 figures; v2: references added, typos corrected, extended discussion on mass computation

Scientific paper

10.1103/PhysRevD.74.025009

We consider global monopoles as well as black holes with global monopole hair in Einstein-Goldstone model with a cosmological constant in four spacetime dimensions. Similar to the $\Lambda=0$ case, the mass of these solutions defined in the standard way diverges. We use a boundary counterterm subtraction method to compute the mass and action of $\Lambda \neq 0$ configurations. The mass of the asymptotically de Sitter solutions computed in this way turns out to take positive values in a specific parameter range and, for a relaxed set of asymptotic boundary conditions, yields a counterexample to the maximal mass conjecture.

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