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:
Physics Reports
影响因子:
--
通讯作者:
C. Bervillier
C. Bervillier
中科院分区:
--
文献类型:
--
作者:
C. Bagnuls;C. Bervillier

文献摘要

被引文献

相似文献

我们批判性地回顾了在标量理论框架中精确重整化群方程(ERGE)的使用。我们着重讨论了不同版本的ERGE的存在性以及求解它的一种近似方法:导数展开。这个展开式的首阶是强调威尔逊重整化群论的非摄动特征的一个极好的教科书范例。我们仅限于考虑标量场(这就是为什么它是一个介绍性的评论),但是读者会发现(在评论的最后)一组对更复杂系统的现有研究的参考。
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.