Dirac quasinormal modes in spherically symmetric regular black holes

Author(s)

Li, Jin ^[1] ; Ma, Hong ^[1] ; Lin, Kai ^[2]

Affiliation

^[1] Chongqing Univ, Dept Phys, Chongqing 401331 - Peoples R China

^[2] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo - Brazil

• Document type: Journal article
• Source: Physical Review D; v. 88, n. 6 SEP 3 2013.
• Web of Science Citations: 30

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 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. (AU)

• FAPESP's process: 12/08934-0 - Horava's gravity at Lifshitz fixed points and its applications to cosmology and astrophysics
• Grantee: Kai Lin
• Support Opportunities: Scholarships in Brazil - Post-Doctoral