A Quantum Cosmological Model with Static and Dynamic Wormholes
نویسندگان
چکیده
منابع مشابه
A Quantum Cosmological Model With Static and Dynamic Wormholes
Quantization is performed of a Friedmann-Robertson-Walker universe filled with a conformally invariant scalar field and a perfect fluid with equation of state p = αρ. A well-known discrete set of static quantum wormholes is shown to exist for radiation (α = 1/3), and a novel continuous set is found for cosmic strings (α = −1/3), the latter states having throat radii of any size. In both cases w...
متن کاملQuantum-mechanical Lorentzian wormholes in cosmological backgrounds.
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First, the ideas introduced in the wormhole research field since the work of Morris and Thorne are reviewed, namely, the issues of energy conditions, wormhole construction, stability, time machines and astrophysical signatures. Then, spherically symmetric and static traversable Morris -Thorne wormholes in the presence of a generic cosmological constant Λ are analyzed. A matching of an interior ...
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We review Coleman’s wormhole mechanism for the vanishing of the cosmological constant. We show that in a minisuperspace model wormhole-connected universes dominate the path integral. We also provide evidence that the Euclidean path integral over geometries with spherical topology is unstable with respect to formation of infinitely many wormhole-connected 4-spheres. Consistency is restored by su...
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ژورنال
عنوان ژورنال: General Relativity and Gravitation
سال: 2003
ISSN: 0001-7701,1572-9532
DOI: 10.1023/a:1022321916891