Late-time tail of a coupled scalar field in the background of a black hole with a global monopole

Details Late-time tail of a coupled scalar field in the background of a black hole with a global monopole Late-time tail of a coupled scalar field in the background of a black hole with a global monopole

2005-11-17

arxiv.org/abs/gr-qc/0511098v2

Mod.Phys.Lett.A23:359-369,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12 pages, A corrected version to be appeared in MPLA

Scientific paper

10.1142/S0217732308023888

Using the technique of spectral decomposition, we investigated the late-time tails of massless and massive coupled scalar fields in the background of a black hole with a global monopole. We found that due to existence of the coupling between the scalar and gravitational fields, the massless scalar field decay faster at timelike infinity $i_+$, and so does the massive one in the intermediate late time. But the asymptotically late-time tail for the massive scalar field is not affected and its decay rate still is $t^{-5/6}$.

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