Flow Equations for U_k and Z_k
High Energy Physics - Theory
2009-10-31 v1
Abstract
By considering the gradient expansion for the wilsonian effective action S_k of a single component scalar field theory truncated to the first two terms, the potential U_k and the kinetic term Z_k, I show that the recent claim that different expansion of the fluctuation determinant give rise to different renormalization group equations for Z_k is incorrect. The correct procedure to derive this equation is presented and the set of coupled differential equations for U_k and Z_k is definitely established.
Cite
@article{arxiv.hep-th/9912141,
title = {Flow Equations for U_k and Z_k},
author = {Vincenzo Branchina},
journal= {arXiv preprint arXiv:hep-th/9912141},
year = {2009}
}
Comments
5 pages