Phys. Rev. D 81, 044003 (2010) - Stability, causality, and quasinormal modes of cosmic strings and cylinders

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

Alan B. Pavan, E. Abdalla, and C. Molina

Phys. Rev. D 81, 044003 – Published 1 February 2010

Abstract

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 timelike curves are unstable against scalar perturbations.

Received 28 August 2009

DOI:https://doi.org/10.1103/PhysRevD.81.044003

©2010 American Physical Society

Authors & Affiliations

Alan B. Pavan^* and E. Abdalla^†

Instituto de Física, Universidade de São Paulo, Caixa Postal 66318, 05315-970, São Paulo-SP, Brazil

Escola de Artes, Ciências e Humanidades, Universidade de São Paulo, Avenida Arlindo Bettio 1000, CEP 03828-000, São Paulo-SP, Brazil

^*alan@fma.if.usp.br
^†eabdalla@usp.br
^‡cmolina@usp.br

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Issue

Vol. 81, Iss. 4 — 15 February 2010

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