Discontinuity problem in the linear stability analysis of thin-shell wormholes

被引：12
|
作者：
Forghani, S. Danial [1 ]
Mazharimousavi, S. Habib [1 ]
Halilsoy, Mustafa [1 ]
机构：
[1] Eastern Mediterranean Univ, Fac Arts & Sci, Dept Phys, Via Mersin 10, Famagusta, North Cyprus, Turkey
来源：
EUROPEAN PHYSICAL JOURNAL PLUS | 2019年 / 134卷 / 07期
关键词：
TRAVERSABLE WORMHOLES; BLACK-HOLES;
D O I：
10.1140/epjp/i2019-12771-2
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the infinite discontinuity points of the stability diagram in thin-shell wormholes. The square of the speed of sound beta(2)(0), which is expressed in terms of pressure and energy density at equilibrium on the throat, arises with a divergent amplitude. As this is physically non-acceptable, we revise the equation of state, such that by fine-tuning of the pressure at static equilibrium, which is at our disposal, we eliminate such singularity. The efficacy of the method is shown in Schwarzschild, extremal Reissner-Nordstrom and dilaton thin-shell wormholes.
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收藏
页数：10
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