How to identify zero modes for improved staggered fermions

We present results of the eigenvalue spectrum for the staggered Dir\"ac operator obtained using a modified Lanczos algorithm. We identify zero modes and non-zero modes. We derive the chiral Ward identity derived from the conserved $U(1)_A$ symmetry, and check it numerically. This is the first s...

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Main Authors Jeong, Hwancheol, Jwa, Seungyeob, Kim, Jangho, Kim, Sunghee, Lee, Sunkyu, Lee, Weonjong, Pak, Jeonghwan
Format Journal Article
LanguageEnglish
Published 06.11.2017
Subjects
Physics - High Energy Physics - Lattice
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Summary:We present results of the eigenvalue spectrum for the staggered Dir\"ac operator obtained using a modified Lanczos algorithm. We identify zero modes and non-zero modes. We derive the chiral Ward identity derived from the conserved $U(1)_A$ symmetry, and check it numerically. This is the first step toward construction of an improved method to identify zero modes reliably with staggered fermions.
DOI:10.48550/arxiv.1711.01826