中文
相关论文

相关论文: Linearized Stability of Harada Thin-Shell Wormhole…

200 篇论文

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 of exotic matter. In particular the thin-shell wormhole formalism has been…

广义相对论与量子宇宙学 · 物理学 2017-11-03 Ali Övgün , Kimet Jusufi

In this article we theoretically construct circular thin-shell wormholes in a 2+1 dimensional spacetime. The construction is symmetric with respect to the throat. We present a general formalism for the study of the mechanical stability…

广义相对论与量子宇宙学 · 物理学 2014-09-11 Cecilia Bejarano , Ernesto F. Eiroa , Claudio Simeone

This paper discusses linearized (spherically symmetric) perturbation of static Heckmann composite thin shell wormholes in Brans-Dicke gravity. The equation of state $P= \beta^2 \sigma$ at the throat is linearized around the static solution…

广义相对论与量子宇宙学 · 物理学 2014-01-28 Sergey M. Kozyrev

The thin-shell wormhole created using the Darmois-Israel formalism applied to Robinson-Trautman family of spacetimes is presented. The stress energy tensor created on the throat is interpreted in terms of two dust streams and it is shown…

广义相对论与量子宇宙学 · 物理学 2018-03-05 O. Svitek , T. Tahamtan

Using 'Cut and Paste' technique, we develop a thin shell wormhole in heterotic string theory. We determine the surface stresses, which are localized in the shell, by using Darmois-Israel formalism. The linearized stability of this thin…

广义相对论与量子宇宙学 · 物理学 2008-11-26 F. Rahaman , M. Kalam , S. Chakraborti

In this paper, we construct thin-shell wormholes from regular Ayon-Beato and Garcia black hole by employing cut and paste formalism and examine their stability. We analyze attractive and repulsive characteristics of wormholes corresponding…

广义相对论与量子宇宙学 · 物理学 2017-03-08 M. Sharif , Saadia Mumtaz

The static spherically symmetric thin shell of proper mass $m$ and electric charge $q$ around a central star or black hole of mass $M$ is in general unstable. Although with fine-tuned $m,q,$ and $M$ it can be considered quasi-stable. These…

广义相对论与量子宇宙学 · 物理学 2025-02-13 S. Habib Mazharimousavi

Based on the recently introduced black-bounce spacetimes, we shall consider the construction of the related spherically symmetric thin-shell traversable wormholes within the context of standard general relativity. All of the really unusual…

广义相对论与量子宇宙学 · 物理学 2020-06-23 Francisco S. N. Lobo , Alex Simpson , Matt Visser

In this study, we have conducted an analysis of traversable wormhole solutions within the framework of linear $f(Q, T) = \alpha Q + \beta T$ gravity, ensuring that all the energy conditions hold for the entire spacetime. The solutions…

广义相对论与量子宇宙学 · 物理学 2023-06-13 Moreshwar Tayde , Sayantan Ghosh , P. K. Sahoo

We construct a new type of thin-shell wormhole for non-asymptotically flat charged black holes in generalized dilaton-axion gravity inspired by low-energy string theory using cut-and-paste technique. We have shown that this thin shell…

广义相对论与量子宇宙学 · 物理学 2015-06-05 Ayan Banerjee , Farook Rahaman , Surajit Chattopadhyay , Sumita Banerjee

This work investigates the spherically symmetric thin-shell wormhole solutions in four-dimensional Einstein-Gauss-Bonnet theory and explores their stabilities under radial, linear perturbations. These solutions are typically traversable and…

广义相对论与量子宇宙学 · 物理学 2023-05-25 Peng Liu , Chao Niu , Wei-Liang Qian , Xiaobao Wang , Cheng-Yong Zhang

It has recently been shown that traversable wormholes may be supported by phantom energy. In this work phantom wormhole geometries are modelled by matching an interior traversable wormhole solution, governed by the equation of state…

广义相对论与量子宇宙学 · 物理学 2009-11-11 Francisco S. N. Lobo

In this paper, we construct thin-shell wormholes from charged black string through cut and paste procedure and investigate its stability. We assume modified generalized Chaplygin gas as a dark energy fluid (exotic matter) present in the…

广义相对论与量子宇宙学 · 物理学 2015-06-16 M. Sharif , M. Azam

In this paper, we constructed an acoustic thin-shell wormhole (ATW) under neo-Newtonian theory using the Darmois-Israel junction conditions. To determine the stability of the ATW by applying the cut-and-paste method, we found the surface…

广义相对论与量子宇宙学 · 物理学 2017-07-04 Ali Övgün , Ines G. Salako

Recently, a class of spherically symmetric thin-shell wormholes in Brans-Dicke gravity have been introduced. Such wormholes can be supported by matter satisfying the weak energy condition (WEC). In this paper, we first obtain all the exact…

广义相对论与量子宇宙学 · 物理学 2015-05-28 Xiaojun Yue , Sijie Gao

We consider wormhole geometries subject to a gravitational action consisting of non-linear powers of the Ricci scalar. Specifically, wormhole throats are studied in the case where Einstein gravity is supplemented with a Ricci-squared and…

广义相对论与量子宇宙学 · 物理学 2007-05-23 N. Furey , A. DeBenedictis

In this work, we explore asymptotically flat charged thin-shell wormholes of third order Lovelock gravity in higher dimensions, taking into account the cut-and-paste technique. Using the generalized junction conditions, we determine the…

广义相对论与量子宇宙学 · 物理学 2015-08-19 Mohammad Reza Mehdizadeh , Mahdi Kord Zangeneh , Francisco S. N. Lobo

This paper explores the role of nonlinear electrodynamics on the stable configuration of thin-shell wormholes formulated from two equivalent geometries of Reissner-Nordstr\"om black hole with nonlinear electrodynamics. For this purpose, we…

广义相对论与量子宇宙学 · 物理学 2023-01-11 Faisal Javed , G. Fatima , G. Mustafa , Ali Ovgun

We revisit the stability analysis of cylindrical thin shell wormholes which have been studied in literature so far. Our approach is more systematic and in parallel to the method which is used in spherically symmetric thin shell wormholes.…

广义相对论与量子宇宙学 · 物理学 2014-04-03 S. Habib Mazharimousavi , M. Halilsoy , Z. Amirabi

We construct traversable thin-shell wormholes which are asymptotically Ads/dS applying the cut and paste procedure for the case of an acoustic metric created by a relativistic Bose-Einstein condensate. We examine several definitions of the…

广义相对论与量子宇宙学 · 物理学 2017-10-17 M. G. Richarte , I. G. Salako , J. P. Morais Graça , H. Moradpour , Ali Övgün