Higher-derivative extension of the functional renormalization group
Higher-derivative extension of the functional renormalization group
复制标题
函数重整化群的高阶导数扩展
DOI：
10.1093/ptep/ptac080
复制
发表时间：
2022
影响因子：
3.5
通讯作者：
Tsuchiya Asato
中科院分区：
文献类型：
--
作者：
Tanaka Gota;Tsuchiya Asato
研究了泛函重整化群的高阶导数扩张。我们考虑标量场的FRG方程，该方程由有效作用量的高阶泛函导数和任意截止函数组成。我们证明了FRG方程的局部势近似确实可以再现Wilson-Fisher不动点附近的近似展开。
We study the higher-derivative extension of the functional renormalization group (FRG). We consider FRG equations for a scalar field that consist of terms with higher functional derivatives of the effective action and arbitrary cutoff functions. We show that the ϵ expansion around the Wilson–Fisher fixed point is indeed reproduced by the local potential approximation of the FRG equations.