Thin-shell wormholes with a generalized Chaplygin gas

The objective of this paper is to investigate the stability of cylindrical thin-shell wormholes. We follow the Visser’s cut and paste approach for the construction of thin-shell. The Darmois–Israel formalism is used to determine the stress–energy tensor. The null and weak energy conditions as well as attractive and repulsive characteristics of thin-shell wormholes are analyzed. We find both stable and unstable solutions by taking dark energy, generalized cosmic Chaplygin gas, and modified cosmic Chaplygin gas models as exotic matter at the wormhole throat. Finally, we compare our results with those for modified generalized Chaplygin gas model.

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Stability of asymmetric thin shell wormhole with a variable equation of state

Modern Physics Letters A ◽

10.1142/s0217732320502156 ◽

2020 ◽

Vol 35 (26) ◽

pp. 2050215 ◽

Cited By ~ 1

Author(s):

A. Eid

Keyword(s):

Equation Of State ◽

Linear Stability ◽

Thin Shell ◽

Chaplygin Gas ◽

De Sitter ◽

Dynamical Equations ◽

Generalized Chaplygin Gas ◽

Variable Equation ◽

Thin Shell Wormholes

Dynamical equations of asymmetric thin shell wormholes connecting two different spacetimes by applying the cut and paste technique are constructed. The linear stability with variable modified generalized Chaplygin gas (VMGCG) equation of state, where the pressure will be a function of both radius and density, is investigated. This formalism is applied to two specific cases of asymmetric wormhole of a Schwarzschild connected to Reissner–Nordström spacetime and Reissner–Nordström connected to Schwarzschild–De Sitter (SDS) spacetime.

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Schwarzschild-de Sitter and Anti-de Sitter Thin-Shell Wormholes and Their Stability

Advances in High Energy Physics ◽

10.1155/2014/639759 ◽

2014 ◽

Vol 2014 ◽

pp. 1-13 ◽

Cited By ~ 5

Author(s):

M. Sharif ◽

Saadia Mumtaz

Keyword(s):

Thin Shell ◽

Chaplygin Gas ◽

Exotic Matter ◽

Energy Conditions ◽

Energy Tensor ◽

De Sitter ◽

Stress Energy ◽

Linear Perturbations ◽

Unstable Solutions ◽

Thin Shell Wormholes

This paper is devoted to construct Schwarzschild-de Sitter and anti-de Sitter thin-shell wormholes by employing Visser’s cut and paste technique. The Darmois-Israel formalism is adopted to formulate the surface stresses of the shell. We analyze null and weak energy conditions as well as attractive and repulsive characteristics of thin-shell wormholes. We also explore stable and unstable solutions against linear perturbations by taking two different Chaplygin gas models for exotic matter. It is concluded that the stress-energy tensor components violate the null and weak energy conditions indicating the existence of exotic matter at the wormhole throat. Finally, we find unstable and stable configurations for the constructed thin-shell wormholes.

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Stability of a charged rotating BTZ thin shell with a different variable equation of state

Modern Physics Letters A ◽

10.1142/s0217732321500863 ◽

2021 ◽

pp. 2150086

Author(s):

A. Eid

Keyword(s):

Black Holes ◽

Equation Of State ◽

Thin Shell ◽

Mechanical Stability ◽

Chaplygin Gas ◽

Throat Radius ◽

Generalized Chaplygin Gas ◽

Radial Perturbation ◽

Btz Black Holes ◽

Variable Equation

Dynamics of charged rotating BTZ black holes in 2 + 1 dimensions by using the cut and paste approach is discussed. Due to the mechanical stability of rotating charged BTZ thin shell, the radial perturbation about the equilibrium throat radius and three variable equation of state (EoS) is analyzed. Several examples are displayed satisfying it, such as variable Phantom-like, variable Chaplygin gas and variable modified generalized Chaplygin gas.

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Charged thin-shell wormholes with quintessence effects

International Journal of Modern Physics A ◽

10.1142/s0217751x21501839 ◽

2021 ◽

Vol 36 (26) ◽

Author(s):

Saadia Mumtaz

Keyword(s):

Thin Shell ◽

Chaplygin Gas ◽

Exotic Matter ◽

Stability Regions ◽

Thin Shell Wormholes ◽

Theoretical Construction ◽

The Stability ◽

Effective Component

This work studies the theoretical construction of charged quintessence thin-shell wormholes using Israel thin-shell approach. The stability of these wormhole solutions is investigated by taking linear, logarithmic and Chaplygin gas models as a constituent of exotic matter at thin-shell. The presence of wormhole stability regions particularly relies on the physically justifiable values of charge and quintessence parameter. It is noted that the increasing value of charge seems as an effective component for stable regions while the rise in negativity of the quintessence parameter gives more stable wormhole configurations.

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