On the linear instability of the Ellis-Bronnikov-Morris-Thorne wormhole

Abstract

We consider the wormhole of Ellis, Bronnikov, Morris and Thorne (EBMT), arising from Einstein's equations in presence of a phantom scalar field. In this paper we propose a simplified derivation of the linear instability of this system, making comparisons with previous works on this subject (and generalizations) by Gonzalez, Guzman, Sarbach, Bronnikov, Fabris and Zhidenko.

In comparison with version v2, some additional references have been added and commented. This is a pre-print of the article published in General Relativity and Gravitation. The published article is available online at https://doi.org/10.1007/s10714-019-2501-x