204 research outputs found
Skyrme Black Holes in the Isolated Horizons Formalism
We study static, spherically symmetric, Skyrme black holes in the context of
the assumption that they can be viewed as bound states between ordinary bare
black holes and solitons. This assumption and results stemming from the
isolated horizons formalism lead to several conjectures about the static black
hole solutions. These conjectures are tested against the Skyrme black hole
solutions. It is shown that, while there is in general good agreement with the
conjectures, a crucial aspect seems to violate one of the conjectures.Comment: Full journal version, 6 pages, 5 figure
Collective Quantisation of a Gravitating Skyrmion
Collective quantisation of a B=1 gravitating skyrmion is described. The
rotational and isorotational modes are quantised in the same manner as the
skyrmion without gravity. It is shown in this paper how the static properties
of nucleons such as masses, charge densities, magnetic moments are modified by
the gravitational interaction.Comment: 10 pages, 9 figures, minor corrections, published versio
SU(3) Einstein-Skyrme Solitons and Black Holes
In the SU(3) Einstein-Skyrme system static spherically symmetric
particle-like solutions and black holes exist for both the SU(2) and the SO(3)
embedding. The SO(3) embedding leads to new particle-like solutions and black
holes, sharing many features with the SU(2) solutions. In particular, there are
always two branches of solutions, forming a cusp at a critical coupling
constant. The regular SO(3) solutions have even topological charge . The
mass of the SO(3) solutions is less than twice the mass of the
SU(2) solutions. We conjecture, that the lowest SO(3) branches correspond to
stable particle-like solutions and stable black holes.Comment: LATEX, 16 pages, 6 figure
Spinning Gravitating Skyrmions
We investigate self-gravitating rotating solutions in the Einstein-Skyrme
theory. These solutions are globally regular and asymptotically flat. We
present a new kind of solutions with zero baryon number, which possess neither
a flat limit nor a static limit.Comment: 13 pages, 6 figure
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