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gr-qc2011★ 4 cited
On Born approximation in black hole scattering
D. Batic, N. G. Kelkar, M. Nowakowski
A massless field propagating on spherically symmetric black hole metrics such as the Schwarzschild, Reissner-Nordström and Reissner-Nordström-de Sitter backgrounds is considered. I…
gr-qc2011★ 3 cited
Comment on "Quasinormal modes in Schwarzschild-de Sitter spacetime: A simple derivation of the level spacing of the frequencies"
D. Batic, N. G. Kelkar, M. Nowakowski
It is shown here that the extraction of quasinormal modes (QNMs) within the first Born approximation of the scattering amplitude is mathematically not well founded. Indeed, the con…