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Papers

Absorption Cross Section in Warped AdS3 Black Hole

  • Author오정근
  • JournalJ HIGH ENERGY 0901 (2009
  • Classification of papersSCI
The absorption cross section is studied in the low-frequency region for a propagating
scalar field under the warped AdS3 black hole background in the cosmological
topologically massive gravity. It can be shown that the absorption cross section is unexpectedly
deformed by the gravitational Chern-Simons term, which is proportional to the
scattering area of black hole with an additional contribution depending on the combinations
of 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.
The absorption cross section is studied in the low-frequency region for a propagating
scalar field under the warped AdS3 black hole background in the cosmological
topologically massive gravity. It can be shown that the absorption cross section is unexpectedly
deformed by the gravitational Chern-Simons term, which is proportional to the
scattering area of black hole with an additional contribution depending on the combinations
of 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.