Thin-shell wormholes from the regular Hayward black hole

Abstract

We revisit the regular black hole found by Hayward in 4-dimensional static, spherically symmetric spacetime. To find a possible source for such a spacetime we resort to the nonlinear electrodynamics in general relativity. It is found that a magnetic field within this context gives rise to the regular Hayward black hole. By employing such a regular black hole we construct a thin-shell wormhole for the case of various equations of state on the shell. We abbreviate a general equation of state by p = ψ(σ ) where p is the surface pressure which is a function of the mass density (σ ). In particular, linear, logarithmic, Chaplygin, etc. forms of equations of state are considered. In each case we study the stability of the thin shell against linear perturbations. We plot the stability regions by tuning the parameters of the theory. It is observed that the role of the Hayward parameter is to make the TSW more stable. Perturbations of the throat with small velocity condition are also studied. The matter of our TSWs, however, remains exotic.

Thin-shell wormholes with charge in F(R) gravity

“…Plane and cylindrical thin-shell wormholes were also analyzed [16][17][18][19][20][21][22][23][24]. The Chaplygin gas and its generalizations a e-mail: eiroa@iafe.uba.ar b e-mail: gfigueroa@iafe.uba.ar were used to model the exotic matter supporting wormholes [25][26][27][28][29][30]. The linearized stability of Schwarzschild thin-shell wormholes with variable equations of state has been recently considered [31].…”

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

“…In what follows, we will use three different gas models for the exotic matter to explore the stability analysis: LBG [40], CG [61,62], and finally LogG [15]. The equation of state of LBG [9,14,59,60] is given by…”

“…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].…”

Stability of effective thin-shell wormholes under Lorentz symmetry breaking supported by dark matter and dark energy

“…For this purpose, many kinds of energy of states (EOS) are used that are also familiar to us from cosmological models, such as Chaplygin gas [59], generalized Chaplygin gas [60], modified Chaplygin gas (MCG) [61], barotropic fluids [26], logarithmic gas, etc. [13,14,16,18,19,32,33,62]. The increasing number and precision of cosmological experiments has revealed more evidence of the standard ΛCDM model, which is an accurate description of gravity on cosmological scales [63][64][65][66][67][68].…”