摘要
A moditied Wentzel-Kramers-Brillouin approach is used to determine the complex normal-mode frequencies of external perturbations in generalized Schwarzschild geometry. In the λ= 1 case (Schwarzschild geometry), the agreement with other methods is excellent for the low-lying modes. On the contrary, the λ ≠ 1 case of this geometry is unstable against external perturbations.
作者
袁宁一
李新洲
YUAN Ning-Yi;LI Xin-Zhou(Department of Physics,Shanghai Teachers University,Shanghai 200234;East China Institute for Theoretical Physics,Shanghai 200237)
基金
Supported by the National Natural Science Foundation of China under Grant No.19875016.
