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Rocked quantum periodic systems in the presence of coordinate-dependent friction
Bao, JD; Abe, Y; Zhuo, YZ; Bao, JD , Beijing Meteorol Coll, Beijing 100081, Peoples R China.
1998
发表期刊PHYSICAL REVIEW E
ISSN1539-3755
卷号58期号:3页码:2931-2937
摘要We study rocked periodic systems with quantum fluctuations and coordinate-dependent friction. The steady current along the direction of the external driving force is evaluated numerically in terms of the path-integral Monte Carlo method and discussed in terms of the steepest descent approximation. Above the crossover temperature T-c a classical-like distribution function is given in order to calculate the least nonvanishing eigenvalue of the Fokker-Planck equation, thus one can finally obtain an expression of the current for moderate-to-strong damping. The influence of nonlinear quantum dissipation on the magnitude and the direction of the average current is observed. The classical current is also calculated using the Langevin simulation. The results show that when the friction is a periodic function of the coordinate, a net current averaging over the two directions arises even in the absence of both spatial and time asymmetry.
部门归属Beijing Meteorol Coll, Beijing 100081, Peoples R China; CCAST, World Lab, Beijing 100080, Peoples R China; Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 606, Japan; Inst Atom Energy, Beijing 102413, Peoples R China; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Activated Rate-processes Induced Transport Noise Ratchets State
学科领域Physics
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收录类别SCI
WOS记录号WOS:000076011200042
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被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12272
专题理论物理所SCI论文
通讯作者Bao, JD , Beijing Meteorol Coll, Beijing 100081, Peoples R China.
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GB/T 7714
Bao, JD,Abe, Y,Zhuo, YZ,et al. Rocked quantum periodic systems in the presence of coordinate-dependent friction[J]. PHYSICAL REVIEW E,1998,58(3):2931-2937.
APA Bao, JD,Abe, Y,Zhuo, YZ,&Bao, JD , Beijing Meteorol Coll, Beijing 100081, Peoples R China..(1998).Rocked quantum periodic systems in the presence of coordinate-dependent friction.PHYSICAL REVIEW E,58(3),2931-2937.
MLA Bao, JD,et al."Rocked quantum periodic systems in the presence of coordinate-dependent friction".PHYSICAL REVIEW E 58.3(1998):2931-2937.
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