منابع مشابه
No-hair Theorems and Black Holes with Hair
The critical steps leading to the uniqueness theorem for the Kerr-Newman metric are examined in the light of the new black hole solutions with Yang-Mills and scalar hair. Various methods – including scaling techniques, arguments based on energy conditions, conformal transformations and divergence identities – are reviewed, and their range of application to selfgravitating scalar and non-Abelian...
متن کاملCan extreme black holes have ( long ) Abelian Higgs hair ?
It has been argued that a black hole horizon can support the long range fields of a Nielsen-Olesen string, and that one can think of such a vortex as black hole “hair”. In this paper, we examine the properties of an Abelian Higgs vortex in the presence of a charged black hole as we allow the hole to approach extremality. Using both analytical and numerical techniques, we show that the magnetic ...
متن کاملEluding the No - Hair Conjecture for Black Holes ∗
I discuss a recent analytic proof of bypassing the no-hair conjecture for two interesting (and quite generic) cases of four-dimensional black holes: (i) black holes in Einstein-Yang-Mills-Higgs (EYMH) systems and (ii) black holes in higher-curvature (Gauss-Bonnet (GB) type) string-inspired gravity. Both systems are known to possess black-hole solutions with non-trivial scalar hair outside the h...
متن کاملTowards a Novel no-hair Theorem for Black Holes
We provide strong numerical evidence for a new no-scalar-hair theorem for black holes in general relativity, which rules out spherical scalar hair of static four dimensional black holes if the scalar field theory, when coupled to gravity, satisfies the Positive Energy Theorem. This sheds light on the no-scalar-hair conjecture for Calabi-Yau compactifications of string theory, where the effectiv...
متن کاملNo-hair theorem for black holes in astrophysical environments.
According to the no-hair theorem, static black holes are described by a Schwarzschild spacetime provided there are no other sources of the gravitational field. This requirement, however, is in astrophysical realistic scenarios often violated, e.g., if the black hole is part of a binary system or if it is surrounded by an accretion disk. In these cases, the black hole is distorted due to tidal f...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1996
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.76.571