Stability, causality and quasinormal modes of cosmic strings and cylinders

Details Stability, causality and quasinormal modes of cosmic strings and cylinders Stability, causality and quasinormal modes of cosmic strings and cylinders

2009-08-28

arxiv.org/abs/0908.4247v1

Phys.Rev.D81:044003,2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, 3 figures, 6 graph files, 4 tables

Scientific paper

10.1103/PhysRevD.81.044003

In this work we consider the evolution of a massive scalar field in cylindrically symmetric space-times. Quasinormal modes have been calculated for static and rotating cosmic cylinders. We found unstable modes in some cases. Rotating as well as static cosmic strings, i.e., without regular interior solutions, do not display quasinormal oscillation modes. We conclude that rotating cosmic cylinder space-times that present closed time-like curves are unstable against scalar perturbations.

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