370 research outputs found

    Black Holes in Higher Dimensions (Black Strings and Black Rings)

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    The main focus of this session was the presentation of new higher-dimensional black hole solutions, including black rings, black strings, and multi black holes, and the study of their properties. Besides new asymptotically flat and locally asymptotically flat black objects also new black holes with anti-de Sitter asymptotics were reported. The studies of their properties included the investigation of their stability, their thermodynamics, their analyticity and their existence. Furthermore, the geodesics in such higher-dimensional space-times were investigated.Comment: Summary of session BH1 at MG13 in Stockholm, 14 page

    Interior of Nonuniform Black Strings

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    We consider nonuniform black strings inside their event horizon. We present numerical evidence, that the singularity touches the horizon as the horizon topology changing transition is reached.Comment: 4 pages, 5 figue

    Transitions between Vortex Rings and Monopole-Antimonopole Chains

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    In monopole-antimonopole chain solutions of SU(2) Yang-Mills-Higgs theory the Higgs field vanishes at m isolated points along the symmetry axis, whereas in vortex ring solutions the Higgs field vanishes along one or more rings, centered around the symmetry axis. We investigate how these static axially symmetric solutions depend on the strength of the Higgs selfcoupling \lambda. We show, that as the coupling is getting large, new branches of solutions appear at critical values of \lambda. Exhibiting a different node structure, these give rise to transitions between vortex rings and monopole-antimonopole chains.Comment: 14 pages, 18 figures, published in pl
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