Letter: Delta-String—A Hybrid Between Wormhole and String
نویسندگان
چکیده
منابع مشابه
∆−string - a hybrid between wormhole and string
The flux tube solutions in 5D Kaluza-Klein theory can be considered as a string-like object ∆−string. The initial 5D metric can be reduced to some inner degrees of freedom living on the ∆−string. The propagation of electromagnetic waves through the ∆−string is considered. It is shown that the difference between ∆ and ordinary strings are connected with the fact that for the ∆−string such limita...
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We construct a static axisymmetric wormhole from the gravitational field of two Schwarzschild particles which are kept in equilibrium by strings (ropes) extending to infinity. The wormhole is obtained by matching two three-dimensional timelike surfaces surrounding each of the particles and thus spacetime becomes non-simply connected. Although the matching will not be exact in general it is poss...
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In our previous studies of the crowding effect, we have observed that human observers tend to underestimate the length of a letter string (the number of letters in the string) when the letters are close to visual acuity, and the interletter spacings are small. In this study, we asked our observers to identify letters in randomly presented four-letter and five-letter strings. We found that, when...
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ژورنال
عنوان ژورنال: General Relativity and Gravitation
سال: 2003
ISSN: 0001-7701,1572-9532
DOI: 10.1023/a:1024542903983