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题名: Semiclassical and quantum field theoretic bounds for traversable Lorentzian stringy wormholes
作者: Nandi, KK ;  Zhang, YZ ;  Kumar, KBV
刊名: PHYSICAL REVIEW D
出版日期: 2004
卷号: 70, 期号:6, 页码:-
关键词: BRANS-DICKE WORMHOLES ;  GENERAL-RELATIVITY ;  BLACK-HOLES ;  SCALAR FIELDS ;  NATURAL WORMHOLES ;  HORIZON PROBLEM ;  ELLIS GEOMETRY ;  ENERGY ;  COSMOLOGY ;  SPACETIME
学科分类: Physics
通讯作者: Nandi, KK , Univ N Bengal, Dept Math, Darjeeling 734430, W Bengal, India.
部门归属: Univ N Bengal, Dept Math, Darjeeling 734430, W Bengal, India; CCAST, World Lab, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Mangalore Univ, Dept Phys, Mangalagangothri 574199, India
英文摘要: A lower bound on the size of a Lorentzian wormhole can be obtained by semiclassically introducing the Planck cutoff on the magnitude of tidal forces (Horowitz-Ross constraint). Also, an upper bound is provided by the quantum field theoretic constraint in the form of the Ford-Roman Quantum Inequality for massless minimally coupled scalar fields. To date, however, exact static solutions belonging to this scalar field theory have not been worked out to verify these bounds. To fill this gap, we examine the wormhole features of two examples from the Einstein frame description of the vacuum low energy string theory in four dimensions which is the same as the minimally coupled scalar field theory. Analyses in this paper support the conclusion of Ford and Roman that wormholes in this theory can have sizes that are indeed only a few order of magnitudes larger than the Planck scale. It is shown that the two types of bounds are also compatible. In the process, we point out a "wormhole" analog of naked black holes.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000224462000060
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14005
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Nandi, KK,Zhang, YZ,Kumar, KBV. Semiclassical and quantum field theoretic bounds for traversable Lorentzian stringy wormholes[J]. PHYSICAL REVIEW D,2004,70(6):-.
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