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题名: Coherent classical-path description of deep tunneling
作者: Zhang, DH;  Pollak, E
刊名: PHYSICAL REVIEW LETTERS
发表日期: 2004-10-01
DOI: 10.1103/PhysRevLett.93.140401
卷: 93, 期:14, 页:140401-1-140401-4
收录类别: SCI
文章类型: Article
项目归属: 1102
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Multidisciplinary
研究领域[WOS]: Physics
英文摘要: A central challenge to the semiclassical description of quantum mechanics is the quantum phenomenon of "deep" tunneling. Here we show that real time classical trajectories suffice to account correctly even for deep quantum tunneling, using a recently formulated semiclassical initial value representation series of the quantum propagator and a prefactor free semiclassical propagator. Deep quantum tunneling is effected through what we term as coherent classical paths which are composed of one or more classical trajectories that lead from reactant to product but are discontinuous along the way. The end and initial phase space points of consecutive classical trajectories contributing to the coherent path are close to each other in the sense that the distance between them is weighted by a coherent state overlap matrix element. Results are presented for thermal and energy dependent tunneling through a symmetric Eckart barrier.
关键词[WOS]: INITIAL-VALUE REPRESENTATION ;  REAL-TIME PROPAGATOR ;  TRAJECTORIES ;  COLLISIONS ;  H&H2
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000224211900001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/82259
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Ctr Theoret & Computat Chem, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Chem React Dynam, Dalian 116023, Peoples R China
3.Natl Univ Singapore, Dept Computat Sci, Singapore 119260, Singapore
4.Weizmann Inst Sci, Dept Chem Phys, IL-76100 Rehovot, Israel

Recommended Citation:
Zhang, DH,Pollak, E. Coherent classical-path description of deep tunneling[J]. PHYSICAL REVIEW LETTERS,2004,93(14):140401-1-140401-4.
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