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Dilatonic wormholes: Construction, operation, maintenance, and collapse to black holes

Title
Dilatonic wormholes: Construction, operation, maintenance, and collapse to black holes
Authors
Hayward S.A.Kim S.-W.Lee H.
Ewha Authors
김성원
SCOPUS Author ID
김성원scopus
Issue Date
2002
Journal Title
Physical Review D
ISSN
0556-2821JCR Link
Citation
vol. 65, no. 6
Indexed
SCOPUS WOS scopus
Abstract
The CGHS two-dimensional dilaton gravity model is generalized to include a ghost Klein-Gordon field, i.e., with a negative gravitational coupling. This exotic radiation supports the existence of static traversible wormhole solutions, analogous to Morris-Thorne wormholes. Since the field equations are explicitly integrable, concrete examples can be given of various dynamic wormhole processes, as follows, (i) Static wormholes are constructed by irradiating an initially static black hole with the ghost field, (ii) The operation of a wormhole to transport matter or radiation between the two universes is described, including the back reaction on the wormhole, which is found to exhibit a type of neutral stability, (iii) It is shown how to maintain an operating wormhole in a static state, or return it to its original state, by turning up the ghost field, (iv) If the ghost field is turned off, either instantaneously or gradually, the wormhole collapses into a black hole. © 2002 The American Physical Society.
DOI
10.1103/PhysRevD.65.064003
Appears in Collections:
사범대학 > 과학교육과 > Journal papers
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