Speaker
Mr
Norihiko Kamata
(Tohoku Univ)
Description
Recently, the Yang-Mills gradient flow method has continued to develop remarkably. The most successful application is demonstrated in an accurate determination of a reference scale. However, there is still room for improvement with respect to the lattice gradient flow, where some lattice artifacts are found to be non-negligible. Following a recent paper by Fodor et al. (arXiv:1406.0827), we examine several types of tree-level improvements on the flow action with various gauge actions in order to reduce the lattice discretization error.
In this talk, we will present our numerical results for reference scale $t_0$ using tree-level, $O(a^4)$ improved lattice gradient flow including the rectangle term in the flow action, and discuss effects of the discretization error in the lattice gradient flow.
Primary author
Mr
Norihiko Kamata
(Tohoku Univ)
Co-author
Prof.
Shoichi Sasaki
(Tohoku University)
