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Sharif, M.; Mumtaz, Saadia
Funding organisation: SCOAP3, CERN, Geneva (Switzerland)
arXiv e-print [ PDF ]2016
Funding organisation: SCOAP3, CERN, Geneva (Switzerland)
arXiv e-print [ PDF ]2016
AbstractAbstract
[en] The aim of this paper is to construct regular Hayward thin-shell wormholes and analyze their stability. We adopt Israel formalism to calculate surface stresses of the shell and check the null and weak energy conditions for the constructed wormholes. It is found that the stress-energy tensor components violate the null and weak energy conditions leading to the presence of exotic matter at the throat. We analyze the attractive and repulsive characteristics of wormholes corresponding to a"r>0 and a"r<0, respectively. We also explore stability conditions for the existence of traversable thin-shell wormholes with arbitrarily small amount of fluid describing cosmic expansion. We find that the space-time has nonphysical regions which give rise to event horizon for 0< a_0<2.8 and the wormhole becomes nontraversable producing a black hole. The nonphysical region in the wormhole configuration decreases gradually and vanishes for the Hayward parameter l=0.9. It is concluded that the Hayward and Van der Waals quintessence parameters increase the stability of thin-shell wormholes.
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Source
Available from http://dx.doi.org/10.1155/2016/2868750; Available from http://repo.scoap3.org/record/16630; PUBLISHER-ID: 2868750; ARXIV: arXiv:1602.01434; OAI: oai:repo.scoap3.org:16630; This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Advances in High Energy Physics (Online); ISSN 1687-7365;
; v. 2016; [13 p.]

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