Quantum decay rate of a nonlinear dissipative system with fission-like potential near T-c

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	Quantum decay rate of a nonlinear dissipative system with fission-like potential near T-c
	Bao, JD; Zhuo, YZ; Wu, XZ; Bao, JD , BEIJING INST METEOROL,BEIJING 100081,PEOPLES R CHINA.
	1996
发表期刊	ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI
ISSN	0939-7922
卷号	354 期号:3 页码:293-299
摘要	We use a thermodynamic scheme (imaginary free energy method) in terms of the path integral technique to study the quantum decay rates of a metastable state system coupled to a heat bath in the crossover temperature (T-c) region. In this region the transition between thermally activated decay and tunneling occurs. A nonlinear coupling form factor is used to overcome the divergent integral in the partition function near T-c. The decay rate formula based on the steepest descent approximation has been improved. A method is developed to calculate the real and imaginary parts of the partition function which combines a random walk method with fast-Fourier transform Monte-Carlo evaluation. For a nonlinear dissipative system with a damping correlation kernel of exponential form, the accurate numerical calculations are presented. The effects of nonlinear and frequency-dependent damping on the rate are shown.
部门归属	CCAST WORLD LAB,BEIJING 100080,PEOPLES R CHINA; INST ATOM ENERGY,BEIJING 102413,PEOPLES R CHINA; ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
关键词	Activated Rate-processes Finite Temperatures Well
学科领域	Physics
URL	查看原文
收录类别	SCI
文献类型	期刊论文
条目标识符	http://ir.itp.ac.cn/handle/311006/12643
专题	理论物理所SCI论文
通讯作者	Bao, JD , BEIJING INST METEOROL,BEIJING 100081,PEOPLES R CHINA.
推荐引用方式 GB/T 7714	Bao, JD,Zhuo, YZ,Wu, XZ,et al. Quantum decay rate of a nonlinear dissipative system with fission-like potential near T-c[J]. ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI,1996,354(3):293-299.
APA	Bao, JD,Zhuo, YZ,Wu, XZ,&Bao, JD , BEIJING INST METEOROL,BEIJING 100081,PEOPLES R CHINA..(1996).Quantum decay rate of a nonlinear dissipative system with fission-like potential near T-c.ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI,354(3),293-299.
MLA	Bao, JD,et al."Quantum decay rate of a nonlinear dissipative system with fission-like potential near T-c".ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI 354.3(1996):293-299.

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