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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
ISSN0939-7922
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
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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1978-2010年知识产出
通讯作者Bao, JD , BEIJING INST METEOROL,BEIJING 100081,PEOPLES R CHINA.
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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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