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dc.contributor.author Bronnikov K.
dc.contributor.author Sushkov S.
dc.date.accessioned 2018-09-18T20:07:28Z
dc.date.available 2018-09-18T20:07:28Z
dc.date.issued 2010
dc.identifier.issn 0264-9381
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/136740
dc.description.abstract We construct examples of static, spherically symmetric wormhole solutions in general relativity with a minimally coupled scalar field whose kinetic energy is negative in a restricted region of space near the throat (of arbitrary size) and positive far away from it. Thus in such configurations a 'ghost' is trapped in the strong-field region, which may in principle explain why no ghosts are observed under usual conditions. Some properties of general wormhole models with the field are revealed: it is shown that (i) trapped-ghost wormholes are only possible with nonzero potentials V(); (ii) in wormholes with two asymptotically flat regions, a nontrivial potential V() has an alternate sign and (iii) a wormhole with two asymptotically flat regions which is mirror symmetric with respect to its throat has necessarily a zero Schwarzschild mass at both asymptotics. © 2010 IOP Publishing Ltd.
dc.relation.ispartofseries Classical and Quantum Gravity
dc.title Trapped ghosts: A new class of wormholes
dc.type Article
dc.relation.ispartofseries-issue 9
dc.relation.ispartofseries-volume 27
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS02649381-2010-27-9-SID77950958559


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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