Counter-rotational effects on stability of $$2+1$$ 2 + 1 -dimensional thin-shell wormholes

Mazharimousavi, S. Habib; Halilsoy, Mustafa

doi:10.1140/epjc/s10052-014-3073-2

Cited by 23 publications

(4 citation statements)

References 47 publications

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“…где точка обозначает производную по τ . Тогда ненулевые компоненты внешней кривизны (11) записываются как…”

Section: устойчивость кнтоunclassified

“…Как было показано, количество экзотической материи [10] вокруг горловины можно минимизировать, выбирая подходящую геометрию кротовой норы. В настоящее время в литературе имеется много работ, авторы которых, следуя рекомендациям Виссера, сосредоточены на построении КНТО, описываемых в произвольной (низкой или высокой) размерности (см., например, работы [11]- [33]). В настоящей статье мы рассматриваем черную дыру со скалярными волосами (ЧДСВ) в размерности 2 + 1, которая является решением в теории Эйнштейна-Максвелла с самодействующим скалярным полем, описываемым потенциалом Лиувилля V (φ) [34].…”

Section: Introductionunclassified

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Об Одной Кротовой Норе С Тонкой Оболочкой

Овгун¹,

Сакалли²

2017

TMF

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С помощью известной техники Виссера разрезания и склейки на основе черной дыры со скалярными волосами построена скалярная кротовая нора с тонкой оболочкой в размерности 2 + 1. Поверхностное напряжение, сконцентрированное в горловине кротовой норы, определено с использованием формализма Дармуа-Израэля. Анализ устойчивости кротовой норы с тонкой оболочкой проводится с применением различных газовых моделей. Область устойчивости изменяется с помощью подстройки параметров l и u. Отмечается, что полученная кротовая нора, возникающая из черной дыры со скалярными волосами, может оказаться более устойчивой при конкретном значении параметра l, однако для нее по-прежнему нужна экзотическая материя. Ключевые слова: кротовая нора с тонкой оболочкой, устойчивость, формализм Дармуа-Израэля, скалярные волосы, черная дыра.

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Section: устойчивость кнтоunclassified

Section: Introductionunclassified

Об Одной Кротовой Норе С Тонкой Оболочкой

Овгун¹,

Сакалли²

2017

TMF

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“…Such investigation for the Schwarzschild TSW was performed by Poisson and Visser in [25]. Ever since, using the same formalism as [25], there have been diligent investigations on the stability of different TSWs against such a radial perturbation [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43]. Concerning the TSW in regular spacetime, we refer to [44] where the authors investigated the mechanical stability of a TSW in the regular Hayward black hole.…”

Section: Introductionmentioning

confidence: 99%

Stability of thin-shell-wormhole in Robertson-Walker closed universe I: static universe

Amirabi

2023

Phys. Scr.

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We construct a generic thin-shell wormhole (TSW) in the Robertson-Walker(RW) cosmological model of the universe. The general formalism is presentedand here in this paper - the first part of the research- we investigate thestability of the TSW constructed in the static RW universe. To do so, weperform two different stability analyses namely a mechanical linear radialperturbation and a small speed exact (not linearized) perturbation. It isshown that the corresponding TSW is stable against a linear radialperturbation provided that the variable equation of state of the surfaceenergy-momentum tensor is finely tuned. On the other hand, the exactstability analysis in the context of small-speed perturbation reveals thatthe throat of the TSW for the closed static universe oscillates between thecenter of the universe and the outer boundary.

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“…This method was applied to construct a number of thinshell wormholes (TSW), including charged TSW [11,12], TSW with a cosmological constant [13], TSW in dilaton gravity [14], TSW from the regular Hayward black hole [15], TSW in higher-dimensional Einstein-Maxwell theory [16,17], rotating TSW [18,19], quantum corrected TSW in Bohmian quantum mechanics [20], primordial wormholes induced from Grand Unified Theories (GUTs) [21,22], canonical acoustic TSW, charged TSW with dilaton field, TSW with a Chaplygin gas, traversable wormholes in the anti-de Sitter space-time, TSW with a negative cosmological 2 Advances in High Energy Physics constant, wormholes in mimetic gravity, TSW from charged black string, cylindrical TSW, and many other interesting papers , while the stability analysis is investigated by different models, for example, linear perturbations [9] and specific equations of state (EoS) such as linear barotropic gas (LBG), Chaplygin gas (CG), and logarithmic gas (LogG) for the exotic matter [14,[59][60][61][62].…”

Section: Introductionmentioning

confidence: 99%

Stable Dyonic Thin-Shell Wormholes in Low-Energy String Theory

Овгун¹,

Jusufi²

2017

Advances in High Energy Physics

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Considerable attention has been devoted to the wormhole physics in the past 30 years by exploring the possibilities of finding traversable wormholes without the need for exotic matter. In particular, the thin-shell wormhole formalism has been widely investigated by exploiting the cut-and-paste technique to merge two space-time regions and to research the stability of these wormholes developed by Visser. This method helps us to minimize the amount of the exotic matter. In this paper, we construct a four-dimensional, spherically symmetric, dyonic thin-shell wormhole with electric charge , magnetic charge , and dilaton charge Σ, in the context of Einstein-Maxwell-dilaton theory. We have applied Darmois-Israel formalism and the cut-and-paste method by joining together two identical space-time solutions. We carry out the dyonic thin-shell wormhole stability analyses by using a linear barotropic gas, Chaplygin gas, and logarithmic gas for the exotic matter. It is shown that, by choosing suitable parameter values as well as equation of state parameter, under specific conditions, we obtain a stable dyonic thin-shell wormhole solution. Finally, we argue that the stability domain of the dyonic thin-shell wormhole can be increased in terms of electric charge, magnetic charge, and dilaton charge.

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Counter-rotational effects on stability of $$2+1$$ 2 + 1 -dimensional thin-shell wormholes

Cited by 23 publications

References 47 publications

Об Одной Кротовой Норе С Тонкой Оболочкой

Об Одной Кротовой Норе С Тонкой Оболочкой

Stability of thin-shell-wormhole in Robertson-Walker closed universe I: static universe

Stable Dyonic Thin-Shell Wormholes in Low-Energy String Theory

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