Speaker
Description
There are several ways of distinguishing would-be zero modes of staggered fermions from non-zero modes of them. An intuitive approach is observing the taste symmetry on eigenvalue spectrum, but this fails in many cases and does not give much physical information.We are also able to identify those zero modes by measuring their chiralities, which has a better resolution for the identification and provides physical information such as the topological charge. We present results of the chirality measurement on quenched lattice ensembles using HYP-improved staggered fermions. In addition, we introduce chiral Ward identities derived from the conserved U(1) axial symmetry. We show that leakages of the chiralities indeed satisfy these Ward identities numerically. We also investigate the leakage pattern between symmetric pairs for the taste symmetry.
