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    题名: Dynamical renormalization group approach to the altarelli-parisi-lipatov equations
    作者: Boyanovsky, D.;de Vega, H.J.;Lee, D.S.;Wang, S.Y.;Yu, H.L.
    贡献者: 淡江大學物理學系
    日期: 2002-01
    上传时间: 2013-07-09 15:09:07 (UTC+8)
    出版者: College Park: American Physical Society
    摘要: The Altarelli-Parisi-Lipatov equations for the parton distribution functions are rederived using the dynamical renormalization group approach to quantum kinetics. This method systematically treats the ln Q^2 corrections that arises in perturbation theory as a renormalization of the parton distribution function and unambiguously indicates that the strong coupling must be allowed to run with the scale in the evolution kernel. To leading logarithmic accuracy the evolution equation is Markovian and the logarithmic divergences in the perturbative expansion are identified with the secular divergences (terms that grow in time) that emerge in a perturbative treatment of the kinetic equations in nonequilibrium systems. The resummation of the leading logarithms by the Altarelli-Parisi-Lipatov equation is thus similar to the resummation of the leading secular terms by the Boltzmann kinetic equation.
    關聯: Physical Review D (Particles and Fields) 65(4), 045014(7 pages)
    DOI: 10.1103/PhysRevD.65.045014
    显示于类别:[物理學系暨研究所] 期刊論文

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