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- Title
Scalar and spinor quasi normal modes of a 2D dilatonic blackhole.
- Authors
Gayen, Pabitra; Koley, Ratna
- Abstract
External non-minimally coupled scalar and spinor field perturbations have been studied in a (1 + 1) dimensional dilatonic blackhole spacetime (Mandal et al. in Mod Phys Lett A 6:1685–1692. https://doi.org/10.1142/S0217732391001822, 1991; Witten in Phys Rev D 44:314–324. https://doi.org/10.1103/PhysRevD.44.314, 1991). Exact analytical expressions of the quasi-normal mode frequencies have been found for both the cases. In the scalar perturbations the quasi-normal mode frequencies turn out to be purely imaginary and negative. Furthermore we have found that the quasi-normal frequencies for Dirac field exhibit both real and imaginary part. The QNM frequencies decay monotonically with the overtone number under certain class of the blackhole parameters. The decay profile ensures the stability of the blackhole spacetime under these perturbations.
- Subjects
SPACETIME; SCALAR field theory
- Publication
General Relativity & Gravitation, 2023, Vol 55, Issue 11, p1
- ISSN
0001-7701
- Publication type
Article
- DOI
10.1007/s10714-023-03178-5