Global monopoles in dilaton gravity

Details Global monopoles in dilaton gravity Global monopoles in dilaton gravity

1997-09-12

arxiv.org/abs/gr-qc/9709029v3

Class.Quant.Grav. 15 (1998) 985-995

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

15 pages, 3 figures, version to appear in Class Quant Grav

Scientific paper

10.1088/0264-9381/15/4/019

We analyse the gravitational field of a global monopole within the context of low energy string gravity, allowing for an arbitrary coupling of the monopole fields to the dilaton. Both massive and massless dilatons are considered. We find that, for a massless dilaton, the spacetime is generically singular, whereas when the dilaton is massive, the monopole generically induces a long range dilaton cloud. We compare and contrast these results with the literature.

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