Absorption Cross Section in Warped AdS$_3$ Black Hole

Details Absorption Cross Section in Warped AdS$_3$ Black Hole Absorption Cross Section in Warped AdS$_3$ Black Hole

2008-11-17

arxiv.org/abs/0811.2632v3

JHEP 0901:067,2009

Physics

High Energy Physics

High Energy Physics - Theory

15 pages, LaTeX, To appear in JHEP

Scientific paper

10.1088/1126-6708/2009/01/067

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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