Quasinormal modes of charged black holes in string theory

Details Quasinormal modes of charged black holes in string theory Quasinormal modes of charged black holes in string theory

2004-10-21

arxiv.org/abs/gr-qc/0410108v1

Phys.Rev.D70:084046,2004

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

15pages, 9 figures. Accepted for publication in Phys.Rev.D

Scientific paper

10.1103/PhysRevD.70.084046

Both scalar and Dirac quasinormal modes in Garfinkle-Horowitz-Strominger black hole spacetime are studied by using the WKB approximation and the P\"{o}schl-Teller approximation. For scalar field, we find that the QNMs with higher dilatons decay more rapidly than that with lower ones. However, this is not the case for mass $m$. Fields with higher mass will decay more slowly. The similar behaviors appear in the case of Dirac field. We also find that QNM frequencies evaluated by using WKB approximation and P\"{o}schl-Teller approximation have a good agreement with each other when mode number $n$ is small.

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