Dirac quasinormal modes in spherically symmetric regular black holes

2013/08/31 by Jin Li, Hong Ma, Kai Lin
Physics and Astronomy · #gr-qc

paper · pdf · doi:10.1103/physrevd.88.064001

published as Physical Review D 88, 064001 (2013)

arxiv created 2013/10/10 · arxiv updated 2013/10/11

Abstract

Using the WKB approximation, massless and massive Dirac quasinormal modes (QNMs) are studied in spherically symmetric regular spacetimes. We analyze the relationships between QNM frequencies and the parameters (angular momentum number l, magnetic monopole charge β and the mass of the field m), and discuss the extreme charge of magnetic monopole β_e for spherically symmetric regular black holes (BHs). Furthermore, we apply an expansion method to expand QNMs in inverse powers of L=l+1/2, and confirm good precision with l>n. Finally, we improve traditional finite difference method to be available in massive Dirac case, and illuminate the dynamical evolution of massive Dirac field.

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