Abstract
AbstractEllis–Bronnikov (EB) wormholes require violation of null energy conditions at the ‘throat’. This problem was cured by a simple modification of the ‘shape function’, which introduces a new parameter $$m\ge 2$$
m
≥
2
($$m=2$$
m
=
2
corresponds to the EB model). This leads to a generalised (GEB) version. In this work, we consider a model where the GEB wormhole geometry is embedded in a five dimensional warped background. We studied the status of all the energy conditions in detail for both EB and GEB embedding. We present our results analytically (wherever possible) and graphically. Remarkably, the presence of decaying warp factor leads to satisfaction of weak energy conditions even for the EB geometry, while the status of all the other energy conditions are improved compared to the four dimensional scenario. Besides inventing a new way to avoid the presence of exotic matter, in order to form a wormhole passage, our work reveals yet another advantage of having a warped extra dimension.
Funder
University Grant Commission, Govt. of India
Publisher
Springer Science and Business Media LLC
Subject
Physics and Astronomy (miscellaneous),Engineering (miscellaneous)
Reference96 articles.
1. M. Visser, Lorentzian Wormholes: from Einstein To Hawking (AIP Press, New York, 1995)
2. S.W. Hawking, G.F.R. Ellis, The Large Scale Structure of Spacetime (Cambridge University Press, Cambridge, 1973)
3. R.M. Wald, General Relativity, First Indian Edition (University of Chicago Press, Chicago, 2006)
4. F.S.N. Lobo (ed.), Wormholes, Warp Drives and Energy Conditions (Springer, Berlin, 2017)
5. E. Witten, Light rays, singularities, and all that. Rev. Mod. Phys. 92(4), 045004 (2020). arXiv:1901.03928 [hep-th]
Cited by
10 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献