Generalised Ellis–Bronnikov wormholes embedded in warped braneworld background and energy conditions

Abstract Ellis–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 (G...

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Autores principales:	Vivek Sharma, Suman Ghosh
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/c3e967be462f4adeaeafd1c419365688
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spelling	oai:doaj.org-article:c3e967be462f4adeaeafd1c4193656882021-11-14T12:13:50ZGeneralised Ellis–Bronnikov wormholes embedded in warped braneworld background and energy conditions10.1140/epjc/s10052-021-09789-z1434-60441434-6052https://doaj.org/article/c3e967be462f4adeaeafd1c4193656882021-11-01T00:00:00Zhttps://doi.org/10.1140/epjc/s10052-021-09789-zhttps://doaj.org/toc/1434-6044https://doaj.org/toc/1434-6052Abstract Ellis–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.Vivek SharmaSuman GhoshSpringerOpenarticleAstrophysicsQB460-466Nuclear and particle physics. Atomic energy. RadioactivityQC770-798ENEuropean Physical Journal C: Particles and Fields, Vol 81, Iss 11, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Vivek Sharma Suman Ghosh Generalised Ellis–Bronnikov wormholes embedded in warped braneworld background and energy conditions
description	Abstract Ellis–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.
format	article
author	Vivek Sharma Suman Ghosh
author_facet	Vivek Sharma Suman Ghosh
author_sort	Vivek Sharma
title	Generalised Ellis–Bronnikov wormholes embedded in warped braneworld background and energy conditions
title_short	Generalised Ellis–Bronnikov wormholes embedded in warped braneworld background and energy conditions
title_full	Generalised Ellis–Bronnikov wormholes embedded in warped braneworld background and energy conditions
title_fullStr	Generalised Ellis–Bronnikov wormholes embedded in warped braneworld background and energy conditions
title_full_unstemmed	Generalised Ellis–Bronnikov wormholes embedded in warped braneworld background and energy conditions
title_sort	generalised ellis–bronnikov wormholes embedded in warped braneworld background and energy conditions
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/c3e967be462f4adeaeafd1c419365688
work_keys_str_mv	AT viveksharma generalisedellisbronnikovwormholesembeddedinwarpedbraneworldbackgroundandenergyconditions AT sumanghosh generalisedellisbronnikovwormholesembeddedinwarpedbraneworldbackgroundandenergyconditions
_version_	1718429371837972480

Generalised Ellis–Bronnikov wormholes embedded in warped braneworld background and energy conditions

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