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...

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Bibliographic Details
Published in:arXiv.org 2017-11
Main Authors: Jeong, Hwancheol, Seungyeob Jwa, Kim, Jangho, Kim, Sunghee, Lee, Sunkyu, Lee, Weonjong, Pak, Jeonghwan, Collaboration, SWME
Format: Article
Language:English
Subjects:
Algorithms
Eigenvalues
Fermions
Online Access:Get full text
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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.
ISSN:2331-8422