2024 Thin shell wormhole

Thin shell wormhole

Author: mgxi

August undefined, 2024

WebOct 1, 2024 · Thin-shell wormhole Scalar curvature 1. Introduction Wormholes are geometrical objects that act as a tunnel for linking two spacetimes or two different parts of the same spacetime. These are obtained as particular solutions of Einstein’s field equations in general relativity (GR). WebDec 1, 2024 · Dynamics of thin-shell wormholes within the context of f (R) gravity by joining two identical copies of Reissner–Nordstrom–de Sitter manifold using the cut and paste approach is discussed. The stability of wormholes is analyzed through the radial perturbation about the static solution and the modified generalized Chaplygin gas …

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WebFeb 9, 2024 · Wormholes are hypothetical structures in space-time allowed by the general theory of relativity. They provide short cuts through space-time that connect one region of space and time to another; potentially, these regions can be very distant from each other. WebSep 17, 2024 · Thin-shell around the wormhole geometry is obtained by using the cut and paste approach taking the Schwarzschild black hole as an exterior manifold. The stability … trichologist lincoln

Wormholes - Galactic Library

WebOct 24, 2016 · Wormholes Quantum Corrected Schwarzschild Thin Shell Wormhole Authors: Kimet Jusufi University of Tetova Abstract and Figures Recently, Ali and Khalil \cite {Farag Ali}, based on the Bohmian... WebJul 7, 2024 · However, by considering the asymmetric thin-shell wormhole (ATSW) model, we find that the impact parameter of the null geodesics is discontinuous through the … trichologist kansas city

Novel shadows from the asymmetric thin-shell wormhole

WebThin-shell wormholes belong to one of the wormhole classes in which exotic matter is restricted at the hypersurface. To make sure that the observer does not encounter nonphysical zone of BH, a thin shell strengthens the wormhole provided that it has an exotic matter for its maintenance against gravitational collapse. WebDec 1, 2024 · thin-shell wormhol e using cut-and-paste method, that is, two dis- tinct spacetimes M 1 , 2 with different parameters are glued by a thin shell which forms a new … terminal business for saleWebThin-Shell Wormholes A powerful theoretical method for constructing a class of spherically symmetric wormholes from black-hole spacetimes was proposed by Visser [ 6 ]. The starting point is a spherically symmetric line element describing a black-hole spacetime. terminal bus grogol

"WebFeb 18, 2004 · thin shell conﬁnes the exo tic matter thre a ding the wormhole to a ﬁnite region, with a delta-function distr ibution o f the stres s-energy tensor o n the jun ction … " - Thin shell wormhole

Thin shell wormhole

WebJul 20, 2024 · We construct a thin-shell wormhole using the cut and paste technique from regular charged black holes with a Non-linear electrodynamics source (proposed by L.Balart and E.C.Vagenas).Using... WebA thin-shelled wormhole has a single degree of freedom - the diameter of the stargate (i.e. radius of the ring of exotic matter). Using this an effective potential as a function of the wormhole radius can be defined. This is the same idea found in basic physics or chemistry related to molecular separation.

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WebDec 2, 2024 · Recently, a distinct shadow mechanism was proposed by Wang et al. from the asymmetric thin-shell wormhole (ATW) [X. Wang et al., Phys. Lett. B 811, 135930 (2024)]. On the other hand, Gralla, Holz, and Wald's work [Phys. Rev. D 100, 024018 (2024)] represented a nice description of photon rings in the presence of an accretion disk around a black … WebThe thin-shell equations which is commonly known as Einstein’s field equations then becomeThe thin-shell wormhole is an interesting wormholesolution consists in applying the cut-and-past technique. Wetake two copies of GMGHS black hole solution (1), removing σ = − 1 K θ , (11) 4π θ

WebThe toroidal wormhole can be obtained as follows: We cut out a torus that is located near a circle (a degenerated torus with α = ∞) and join it with the analogous construction from another spacetime. III. THIN-SHELL WORMHOLE A. Thin-shell formalism In this section we closely follow the book [19]. WebMar 13, 2014 · Thin-shell wormholes (TSWs) constitute one of the wormhole classes in which the exotic matter is confined on a hypersurface and therefore can be minimized [1–16] (the \(d\)-dimensional thin-shell wormhole is considered in [] and the case with a cosmological constant is studied in []).Finding a physical (i.e. non-exotic) source to …

WebJun 30, 1995 · The class of spherically-symmetric thin-shell wormholes provides a particularly elegant collection of exemplars for the study of traversable Lorentzian wormholes. In the present paper we consider linearized (spherically symmetric) perturbations around some assumed static solution of the Einstein field equations. This … WebFeb 9, 2024 · Using a black hole with scalar hair, we construct a scalar thin-shell wormhole (TSW) in 2+1 dimensions by applying the Visser cut and paste technique. The surface …

WebMay 25, 2024 · A thin shell wormhole is constructed utilizing the cut and paste technique from ABGB–de Sitter black hole derived by Matyjasek et al. The surface stress localized at the wormhole throat is...

WebJun 11, 1997 · We review recent works on the possibility for eternal existence of thin-shell wormholes on Einstein and Einstein–Gauss–Bonnet gravity. We introduce thin-shell wormholes that are categorized into a class of traversable wormhole solutions. After that, we discuss stable thin-shell wormholes with negative-tension branes in … terminal buses bio bio temucoWebThe purpose of this paper is to test the validity of the thin shell formalism. Firstly, we construct a dust thick shell collapsing to a Schwarzschild black hole. From this exact solution, we show that the two sides of the shell satisfy different equations of motion. Moreover, we show that the inner side and the outer side always cross each ... trichologist liverpoolWebJan 31, 2024 · Wormholes represent very special topological objects in a curved space-time. They are generally understood as traversable bridges or shortcuts connecting distant … terminal bushingWebOct 1, 2024 · We use Israel thin-shell formalism to evaluate the stress-energy tensor components of matter distribution located at the wormhole throat. The stability of thin-shell is investigated by using equations of state (phantom-like and generalized Chaplygin gas model) for exotic matter and radial perturbation about equilibrium throat radius. terminal buses bio bioWebMay 10, 2024 · Thin-shell wormhole satisfying energy conditions 1. Introduction. Wormhole is a hypothetical shortcut between two events on the same spacetime or two individual... 2. Junction conditions. The action for a conformal massless scalar field ψ coupled to the … The massless scalar field which satisfies a conformally invariant equation is in some … For spherically symmetric thin shell, the Lanczos equations reduce to (7) σ =-1 2 … The geometry is piecewise a solution of the field equations discussed in this paper, … trichologist marylandWebDec 10, 2024 · Novel shadows from the asymmetric thin-shell wormhole 1. Introduction. The image of M87* taken by Event Horizon Telescope made its debut and revealed the … terminalbuss arlandaWebDec 1, 2024 · Dynamics of thin-shell wormholes within the context of gravity by joining two identical copies of Reissner–Nordstrom–de Sitter manifold using the cut and paste approach is discussed. The stability of wormholes is analyzed through the radial perturbation about the static solution and the modified generalized Chaplygin gas … trichologist los angeles