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Absorption Cross Section in Warped AdS$_3$ Black Hole

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arxiv 0811.2632 v3 pith:GOSPJRI7 submitted 2008-11-17 hep-th gr-qc

John J. Oh , Wontae Kim This is my paper · ORCID
classification hep-thgr-qc
keywords blackcrossholesectionabsorptionareascalarwarped
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abstract

The absorption cross section is studied in the low-frequency region for a propagating scalar field under the warped AdS$_3$ black hole background in the topologically massive gravity. It can be shown that the absorption cross section is significantly deformed by the gravitational Chern-Simons term, which is proportional to the scattering area of black hole with an additional contribution depending on the left-moving and right-moving temperatures. It means that the cross section is larger than the area in spite of the s-wave limit. Finally, we discuss the left-right quasinormal modes for the scalar perturbation in this black hole.

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  1. Fermion quasinormal modes on modified RN background

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    Charged massless fermion quasinormal modes in a noncommutatively deformed Reissner-Nordström black hole show a linear, azimuthal-quantum-number-dependent splitting of the complex mode frequencies.

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