MG11 
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New nonuniform black string solutions

We present nonuniform vacuum black strings in five and six spacetime dimensions. We find qualitative agreement of the physical properties of nonuniform black strings in five and six dimensions. Our results offer further evidence that the black hole and the black string branches merge at a topology changing transition. We generate black string solutions of the Einstein-Maxwell-dilaton theory by using a Harrison transformation. We argue that the basic features of these solutions can be derived from those of the vacuum black string configurations.

Gravitating Multi-Skyrmions

Gravitating multi-Skyrmion configurations with either discrete platonic symmetry or axial symmetry are investigated numerically. We use the harmonic map Ansatz for the Skyrmion field and a simplified Ansatz for the metric to obtain approximate solutions of multi-Skyrmions coupled to gravity. These solutions are static and asymptotically flat. The symmetry of the solutions is imposed by the choice of the harmonic map. We present axially symmetric solutions with baryon number B=2,3,4, as well as the tetrahedral B=3 and cubic B=4 solutions. We show that for fixed baryon number (and given symmetry) two branches of gravitating multi-Skyrmions exist, which merge at a maximal value of the coupling parameter.