Universal formula for the flavor non-singlet axial-vector current from the gradient flow
Abstract
By employing the gradient/Wilson flow, we derive a universal formula that expresses a correctly normalized flavor non-singlet axial-vector current of quarks. The formula is universal in the sense that it holds independently of regularization and especially holds with lattice regularization. It is also confirmed that, in the lowest non-trivial order of perturbation theory, the triangle diagram containing the formula and two flavor non-singlet vector currents possesses non-local structure that is compatible with the triangle anomaly.
Cite
@article{arxiv.1502.01809,
title = {Universal formula for the flavor non-singlet axial-vector current from the gradient flow},
author = {Tasuku Endo and Kenji Hieda and Daiki Miura and Hiroshi Suzuki},
journal= {arXiv preprint arXiv:1502.01809},
year = {2024}
}
Comments
11 pages, 7 figures. In previous versions, a coefficient in Eq. (1.4) was wrong and this mistake propagated to subsequent equations, Eqs. (1.6) and (3.14). We would like to thank Robert Harlander for pointing this out to us