Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2004-07-08
Phys.Rev. D70 (2004) 064018
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
15 pages
Scientific paper
10.1103/PhysRevD.70.064018
A lower bound on the size of a Lorentzian wormhole can be obtained by semiclassically introducing the Planck cut-off 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.
Nandi Kamal Kanti
Vijaya Kumar K. B.
Zhang Yuan-Zhong
No associations
LandOfFree
Semiclassical and Quantum Field Theoretic Bounds for Traversable Lorentzian Stringy Wormholes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Semiclassical and Quantum Field Theoretic Bounds for Traversable Lorentzian Stringy Wormholes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiclassical and Quantum Field Theoretic Bounds for Traversable Lorentzian Stringy Wormholes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-222181