There have been some speculations about the existence of critical unitary O(N)-invariant scalar field theories in dimensions 4 < d < 6 and for large N. Using the functional renormalization group equation, we show that in the lowest order of the derivative expansion and assuming that the anomalous dimension vanishes for large N, the corresponding critical potentials are either unbounded from below or singular for some finite value of the field.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据