Aug 8 – 13, 2022
Hörsaalzentrum Poppelsdorf
Europe/Berlin timezone

The continuum limit with various discretized fermion actions

Aug 9, 2022, 6:10 PM
20m
CP1-HSZ/Ground-0.010 - HS2 (CP1-HSZ)

CP1-HSZ/Ground-0.010 - HS2

CP1-HSZ

450

Speaker

Dianjun Zhao (Institute of Theoretical Physics, Chinese Academy of Sciences)

Description

We present the leading order mixed-action effect $\Delta_{\rm mix}\equiv m_{\pi,{\rm vs}}^2-\frac{m_{\pi,{\rm vv}}^2+m_{\pi,{\rm ss}}^2}{2}$ using HISQ,
clover or overlap valence fermion actions on the gauge ensembles with kinds of
sea fermion actions among a widely used lattice spacing range $a\in [0.04,0.19]$~fm. The results suggest that $\Delta_{\rm mix}$ decreases on the forth order
of the lattice spacing on the gauge ensembles with the dynamical chiral sea
fermion, likes the Domain wall or HISQ fermion. When the clover sea fermion
action which has explicit chiral symmetry breaking is used in the ensemble, $\Delta_{\rm mix}$ can be much larger regardless of the valence fermion action
used.

Primary author

Dianjun Zhao (Institute of Theoretical Physics, Chinese Academy of Sciences)

Presentation materials