Journal
PHYSICAL REVIEW D
Volume 88, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.88.064001
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Funding
- FAPESP [2012/08934-0]
- National Natural Science Foundation of China [11205254, 11178018, 11075224]
- Natural Science Foundation Project of CQ CSTC [2011BB0052]
- Fundamental Research Funds for the Central Universities [CDJRC10300003]
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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 beta, and the mass of the field m) and discuss the extreme charge of magnetic monopole beta(e) for spherically symmetric regular black holes. 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 the traditional finite difference method to be available in the massive Dirac case and illuminate the dynamical evolution of the massive Dirac field.
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