Dissipative dynamics of a spin in a spin environment with non-uniform coupling

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	Dissipative dynamics of a spin in a spin environment with non-uniform coupling
	Guo, Y ; Wang, ZH ; Zhou, DL
刊名	EUROPEAN PHYSICAL JOURNAL D
	2014
卷号	68 期号:5
ISSN号	1434-6060
通讯作者	Guo, Y (reprint author), Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China.
中文摘要	We investigate the reduced dynamics of a central spin coupled to a spin environment with non-uniform coupling. Through using the method of time-dependent density-matrix renormalization group (t-DMRG), we nonperturbatively show the dissipative dynamics of the central spin beyond the case of uniform coupling between the central spin and the environment spins. It is shown that only when the system-environment coupling is weak enough, the central spin system shows Markovian effect and will finally reach the steady state; otherwise, the reduced dynamics is non-Markovian and exhibits a quasi-periodic oscillation. The frequency spectrum and the correlation between the central spin system and the environment are also studied to elucidate the dissipative dynamics of the central spin system for different coupling strengths.
资助信息	National Natural Science Foundation of China [11105020, 11005013, 11175247]; NKBRSF of China [2012CB922104]; Scientific Research Fund of Hunan Provincial Education Department [13B134]; Hunan Provincial Natural Science Foundation of China [12JJ3004]; construct program of the key discipline in Hunan province; Aid program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59076]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Guo, Y,Wang, ZH,Zhou, DL. Dissipative dynamics of a spin in a spin environment with non-uniform coupling[J]. EUROPEAN PHYSICAL JOURNAL D,2014,68(5).
APA	Guo, Y,Wang, ZH,&Zhou, DL.(2014).Dissipative dynamics of a spin in a spin environment with non-uniform coupling.EUROPEAN PHYSICAL JOURNAL D,68(5).
MLA	Guo, Y,et al."Dissipative dynamics of a spin in a spin environment with non-uniform coupling".EUROPEAN PHYSICAL JOURNAL D 68.5(2014).