Quasinormal modes of RN black hole space time with cosmic string in a Dirac field

Details Quasinormal modes of RN black hole space time with cosmic string in a Dirac field Quasinormal modes of RN black hole space time with cosmic string in a Dirac field

2008-09-06

arxiv.org/abs/0809.1140v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12 pages, 28 figures

Scientific paper

We evaluate quasinormal mode frequencies for RN black hole space times with cosmic string perturbed by a massless Dirac field, using P\"{o}schl-Teller potential method. We find that only in the case of RN black hole having small charge, the effect due to cosmic string will dominate when perturbed by a negatively charged Dirac field, but if we are perturbing with positively charged Dirac field decay will be less in the case of black hole having cosmic string compared to the RN black hole without string

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