带电黑洞在Dirac场扰动下的似正规模频率  

Dirac quasinormal modes in dyadosphere spacetime of charged black hole

作　　者：王春艳[1] 赵亚峰[1] 

机构地区：[1]渤海大学数理学院,辽宁锦州121013

出　　处：《渤海大学学报（自然科学版）》2013年第2期131-135,182,共6页Journal of Bohai University:Natural Science Edition

基　　金：国家自然科学基金(No:11147104;No:11271055)

摘　　要：利用三阶WKB近似方法计算了带电黑洞视界周围"dyadosphere"区域的无质量Di-rac场扰动的似正规模频率.从获得的数值结果分析可知,在"dyadosphere"区域里由于引力与非线性电场力的耦合作用,黑洞时空的Dirac微扰场衰减的速度加快.Adopting the third-order WKB approximation,the quasinormal frequencies of Dirac field evolution are evaluated in the dyadosphere of charged black hole.The numerical results obtained can indicate that the massless Dirac perturbations decay more quickly in the dyadosphere of charged black hole,due to coupling between gravitation and nonlinear electrodynamics.

关 键 词：黑洞 似正规模 三阶WKB近似 

分 类 号：P145.8[天文地球—天体物理]