Dynamic thin-shell black-bounce traversable wormholes
نویسندگان
چکیده
منابع مشابه
Traversable wormholes and black hole complementarity.
Black hole complementarity is incompatible with the existence of traversable wormholes. In fact, traversable wormholes cause problems for any theory where information comes out in the Hawking radiation. One school of thought on the black hole information-loss problem says that information encoded on infalling matter comes out subtly encoded in the Hawking radiation, which is only approximately ...
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The general form of a stationary, axially symmetric traversable wormhole is discussed. This is a generalization of the static, spherically symmetric wormholes first considered by Morris and Thorne. It is shown that such a wormhole generically violates the null energy condition at the throat. However, an example is presented in which a class of geodesics falling through it do not encounter any e...
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It has been suggested that a possible candidate for the present accelerated expansion of the Universe is “phantom energy”. The latter possesses an equation of state of the form ω ≡ p/ρ < −1, consequently violating the null energy condition. As this is the fundamental ingredient to sustain traversable wormholes, this cosmic fluid presents us with a natural scenario for the existence of these exo...
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Gauss–Bonnet formula is used to derive a new and simple theorem of nonexistence of vacuum static nonsingular lorentzian wormholes. We also derive simple proofs for the nonexistence of lorentzian wormhole solutions for some classes of static matter such as, for instance, real scalar fields with a generic potential obeying φV ′(φ) ≥ 0 and massless fermions fields.
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In this brief report I introduce a yet another class of geometries for which semi-classical chronology protection theorems are of dubious physical reliability. I consider a “Roman ring” of traversable wormholes, wherein a number of wormholes are arranged in a ring in such a manner that no subset of wormholes is near to chronology violation, though the combined system can be arbitrarily close to...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2020
ISSN: 2470-0010,2470-0029
DOI: 10.1103/physrevd.101.124035