Chaos and dynamics of spinning particles in Kerr spacetime

	Chaos and dynamics of spinning particles in Kerr spacetime
	Han, Wenbiao
刊名	GENERAL RELATIVITY AND GRAVITATION
	2008-09-01
卷号	40 期号:9 页码:1831-1847
关键词	general relativity dynamics chaos fast Lyapulov indicator
英文摘要	We study chaos dynamics of spinning particles in Kerr spacetime of rotating black holes use the Papapetrou equations by numerical integration. Because of spin, this system exists many chaos solutions, and exhibits some exceptional dynamic character. We investigate the relations between the orbits chaos and the spin magnitude S, pericenter, polar angle and Kerr rotation parameter a by means of a kind of brand new Fast Lyapulov Indicator (FLI) which is defined in general relativity. The classical definition of Lyapulov exponent (LE) perhaps fails in curve spacetime. And we emphasize that the Poincare sections cannot be used to detect chaos for this case. Via calculations, some new interesting conclusions are found: though chaos is easier to emerge with bigger S, but not always depends on S monotonically; the Kerr parameter a has a contrary action on the chaos occurrence. Furthermore, the spin of particles can destroy the symmetry of the orbits about the equatorial plane. And for some special initial conditions, the orbits have equilibrium points.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics ; Physics, Multidisciplinary ; Physics, Particles & Fields
研究领域[WOS]	Astronomy & Astrophysics ; Physics
关键词[WOS]	BLACK-HOLES ; GRAVITATIONAL-WAVES ; GENERAL-RELATIVITY ; MOTION ; GRAVITY ; BODIES ; FIELD
收录类别	SCI
语种	英语
WOS记录号	WOS:000258562400003
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/19530]
专题	上海天文台_天文地球动力学研究中心
作者单位	Chinese Acad Sci, Grad Sch, Shanghai Astron Observ, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Han, Wenbiao. Chaos and dynamics of spinning particles in Kerr spacetime[J]. GENERAL RELATIVITY AND GRAVITATION,2008,40(9):1831-1847.
APA	Han, Wenbiao.(2008).Chaos and dynamics of spinning particles in Kerr spacetime.GENERAL RELATIVITY AND GRAVITATION,40(9),1831-1847.
MLA	Han, Wenbiao."Chaos and dynamics of spinning particles in Kerr spacetime".GENERAL RELATIVITY AND GRAVITATION 40.9(2008):1831-1847.