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Microscopic thin-shell wormholes in magnetic Melvin universe

机译:磁性梅尔文宇宙中的微观薄壳虫洞

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We construct thin-shell wormholes in the magnetic Melvin universe. It is shown that in order to make a TSW in the Melvin spacetime the radius of the throat cannot be larger than (frac{2}{B_{0}}), in which (B_{0}) is the magnetic field constant. We also analyze the stability of the constructed wormhole in terms of a linear perturbation around the equilibrium point. In our stability analysis we scan a full set of the Equation of States such as Linear Gas, Chaplygin Gas, Generalized Chaplygin Gas, Modified Generalized Chaplygin Gas, and Logarithmic Gas. Finally we extend our study to the wormhole solution in the unified Melvin and Bertotti–Robinson spacetime. In this extension we show that for some specific cases, the local energy density is partially positive but the total energy which supports the wormhole is positive.
机译:我们在磁性梅尔文宇宙中构造出薄壳虫洞。结果表明,为了在梅尔文时空中进行TSW,喉咙的半径不能大于(frac {2} {B_ {0}}),其中(B_ {0})是磁场常数。我们还根据平衡点周围的线性摄动来分析构造的虫洞的稳定性。在我们的稳定性分析中,我们扫描了全套的状态方程,例如线性气体,Chaplygin气体,广义Chaplygin气体,Modified广义Chaplygin气体和对数气体。最后,我们将研究扩展到统一的Melvin和Bertotti-Robinson时空中的虫洞解决方案。在此扩展中,我们表明,在某些特定情况下,局部能量密度部分为正,而支撑虫洞的总能量为正。

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