UNIVERSALITY OF DISSIPATIVE 2-STATE SYSTEMS
文献类型：期刊论文
| 作者 | HONG, C; LU, Y; HONG, C , INT CTR THEORET PHYS,STRADA COSTIERA 11,I-34014 TRIESTE,ITALY. |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 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 |
| 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. |
入库方式： OAI收割
来源：理论物理研究所
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