370 research outputs found
Black Holes in Higher Dimensions (Black Strings and Black Rings)
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
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
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
- …