UNIVERSALITY OF DISSIPATIVE 2-STATE SYSTEMS

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	UNIVERSALITY OF DISSIPATIVE 2-STATE SYSTEMS
	HONG, C; LU, Y; HONG, C , INT CTR THEORET PHYS,STRADA COSTIERA 11,I-34014 TRIESTE,ITALY.
刊名	PHYSICAL REVIEW B
	1992
卷号	45 期号:23 页码:13753-13756
关键词	Squeezed-state Approach Tunneling Systems Instanton Approach Zero Temperature Model Dynamics Phonons Transition Junctions
ISSN号	0163-1829
英文摘要	The static properties of a dissipative two-state system are studied by perturbation, mapping to the quantum sine-Gordon model, and a variational approach. We find that its properties at zero temperature depend not only on the spectral density J(omega) is similar to SIGMA(l)g(l)2-delta(omega-omega(l)), but also on the explicit form of the coupling strength g(l) is similar omega(l)lambda (omega(l) is the phonon frequency). For weak coupling (lambda greater-than-or equal-to 1), the effect of displacement of the phonon state is dominant; while for strong coupling (lambda greater-than-or-equal-to 1), one must take account of both displacement and deformation. Displaced squeezed states are proposed as ground states of the bath under strong coupling, and we show that the localization transition of the Ohmic dissipation occurs at alpha(c) = 3 - 2-lambda instead of alpha(c) = 1 as for the weak-coupling case.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:A1992HZ24500079
公开日期	2012-08-29
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/12155]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	HONG, C , INT CTR THEORET PHYS,STRADA COSTIERA 11,I-34014 TRIESTE,ITALY.
推荐引用方式 GB/T 7714	HONG, C,LU, Y,HONG, C , INT CTR THEORET PHYS,STRADA COSTIERA 11,I-34014 TRIESTE,ITALY.. UNIVERSALITY OF DISSIPATIVE 2-STATE SYSTEMS[J]. PHYSICAL REVIEW B,1992,45(23):13753-13756.
APA	HONG, C,LU, Y,&HONG, C , INT CTR THEORET PHYS,STRADA COSTIERA 11,I-34014 TRIESTE,ITALY..(1992).UNIVERSALITY OF DISSIPATIVE 2-STATE SYSTEMS.PHYSICAL REVIEW B,45(23),13753-13756.
MLA	HONG, C,et al."UNIVERSALITY OF DISSIPATIVE 2-STATE SYSTEMS".PHYSICAL REVIEW B 45.23(1992):13753-13756.