Spectral functions for composite fields and discontinuity in two-to-two scattering amplitude
Wang, EK; Zhang XF(张晓飞); Zhang, XF; Li, JR
刊名COMMUNICATIONS IN THEORETICAL PHYSICS
1997
卷号28期号:4页码:469-474
学科分类Physics
通讯作者Jingzhou Teachers Coll, Dept Phys, Jingsha 434104, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China ; Huazhong Normal Univ, Inst Particle Phys, Wuhan 430070, Peoples R China
文章类型Article
英文摘要A spectral representation for two-point Green function for arbitrary composite field operators is derived in Thermo Field Dynamics (;TFD). The application to two-to-two scattering at finite temperature shows that the corresponding cross section is of the form sigma=sigma(d)-sigma(i) for two bosons or two fermions, which is similar to the decay rate Gamma=Gamma(d)-Gamma(i) for single boson. The cross section sigma(d) for the scattering process and sigma(i) for the corresponding inverse process determine the rate of approaching to equilibrium of the particle distribution function.
类目[WOS]Physics, Multidisciplinary
研究领域[WOS]Physics
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语种英语
WOS记录号WOS:000071514800013
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237614
专题中国科学院高能物理研究所_理论物理室_期刊论文
作者单位中国科学院高能物理研究所
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Wang, EK,Zhang XF,Zhang, XF,et al. Spectral functions for composite fields and discontinuity in two-to-two scattering amplitude[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,1997,28(4):469-474.
APA Wang, EK,张晓飞,Zhang, XF,&Li, JR.(1997).Spectral functions for composite fields and discontinuity in two-to-two scattering amplitude.COMMUNICATIONS IN THEORETICAL PHYSICS,28(4),469-474.
MLA Wang, EK,et al."Spectral functions for composite fields and discontinuity in two-to-two scattering amplitude".COMMUNICATIONS IN THEORETICAL PHYSICS 28.4(1997):469-474.
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