Exact renormalization group equations. An Introductory review
Exact renormalization group equations. An Introductory review
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精确的重整化群方程。
DOI:
10.1016/s0370-1573(00)00137-x
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发表时间:
2000
期刊:
影响因子:
--
通讯作者:
C. Bervillier
中科院分区:
文献类型:
--
作者:
C. Bagnuls;C. Bervillier
We critically review the use of the exact renormalization group equations (ERGE) in the framework of the scalar theory. We lay emphasis on the existence of different versions of the ERGE and on an approximation method to solve it: the derivative expansion. The leading order of this expansion appears as an excellent textbook example to underline the nonperturbative features of the Wilson renormalization group theory. We limit ourselves to the consideration of the scalar field (this is why it is an introductory review) but the reader will find (at the end of the review) a set of references to existing studies on more complex systems.