https://doi.org/10.1140/epjp/i2019-12771-2
Regular Article
Discontinuity problem in the linear stability analysis of thin-shell wormholes
Department of Physics, Faculty of Arts and Sciences, Eastern Mediterranean University, North Cyprus via Mersin 10, Famagusta, Turkey
* e-mail: danial.forghani@emu.edu.tr
Received:
5
March
2019
Accepted:
20
May
2019
Published online:
19
July
2019
We investigate the infinite discontinuity points of the stability diagram in thin-shell wormholes. The square of the speed of sound 
, 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-Nordström and dilaton thin-shell wormholes.
© Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature, 2019
