Bonn 2001 – wissenschaftliches Programm

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GR: Gravitation und Relativitätstheorie

GR 8: Schwarze Löcher

GR 8.3: Fachvortrag

Mittwoch, 28. März 2001, 14:45–15:00, VII

Gravitationally bound monopoles — •Betti Hartmann1, Burkhard Kleihaus2, and Jutta Kunz11FB8-Physik, Carl-von-Ossietzky Universität Oldenburg — 2Department of Mathematical Physics, University College, Dublin, Irland

We construct axially symmetric monopole solutions in SU(2) Einstein-Yang-Mills-Higgs (EYMH) theory, carrying magnetic charge n. Whereas in flat space, there exists only a repulsive phase for like monopoles, in curved space there are gravitationally bound multimonopole solutions for vanishing and small Higgs selfcoupling. Their mass per unit charge is lower than the mass of the gravitating n=1 monopole. For large Higgs selfcoupling though, the gravitational attraction is not able to overcome the repulsion of the long range magnetic field.
Black hole solutions in EYMH theory are no longer uniquely determined by their mass and charge (for vanishing angular momentum) and thus violate the No-dqno-hairNo-dq conjecture. Here we construct non-abelian static axially symmetric black hole solutions with magnetic charge n>1. Being static and not spherically symmetric, these black hole solutions also show, that Israel’s theorem does not generalize to EYMH theory. hep-th/0009195, Phys.Rev.Lett, in press

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