Výsledky vyhledávání - "Wells, C. G."

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Classical and Quantum Initial Value Problems for Models of Chronology Violation

Autor: Fewster, C. J., Higuchi, A., Wells, C. G.

Publikováno v: Phys.Rev.D54:3806-3825,1996

We study the classical and quantum theory of a class of nonlinear differential equations on chronology violating spacetime models in which space consists of finitely many discrete points. Classically, in the linear and weakly nonlinear regimes (for g

Externí odkaz: http://arxiv.org/abs/gr-qc/9603045

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Unitarity of Quantum Theory and Closed Time-Like Curves

Autor: Fewster, C. J., Wells, C. G.

Publikováno v: Phys.Rev.D52:5773-5782,1995

Interacting quantum fields on spacetimes containing regions of closed timelike curves (CTCs) are subject to a non-unitary evolution $X$. Recently, a prescription has been proposed, which restores unitarity of the evolution by modifying the inner prod

Externí odkaz: http://arxiv.org/abs/hep-th/9409156

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Flux-Confinement in Dilatonic Cosmic Strings

Autor: Gibbons, G. W., Wells, C. G.

Publikováno v: Class.Quant.Grav.11:2499-2506,1994

We study dilaton-electrodynamics in flat spacetime and exhibit a set of global cosmic string like solutions in which the magnetic flux is confined. These solutions continue to exist for a small enough dilaton mass but cease to do so above a critcal v

Externí odkaz: http://arxiv.org/abs/hep-th/9312014

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Anti-Gravity Bounds and the Ricci Tensor

Autor: Gibbons, G. W., Wells, C. G.

Recently Penrose, Sorkin and Woolgar have developed a new technique for proving the positive mass theorem in general relativity. We extend their result to produce a new inequality relating the mass, electric and scalar charges in theories coupling to

Externí odkaz: http://arxiv.org/abs/gr-qc/9310002

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