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ID 14609
file
creator
CP-PACS, Collaboration
Aoki, S
Fukugita, M
Ishizuka, N
Iwasaki, Y
Kanaya, K
Kaneko, T
Kuramashi, Y
Taniguchi, Y
Ukawa, A
Yoshié, T
NDC
Physics
abstract
We report on a nonperturbative evaluation of the renormalization factors for the vector and axial-vector currents, ZV and ZA, in the quenched domain-wall QCD (DWQCD) with plaquette and renormalization-group-improved gauge actions. We take the Dirichlet boundary condition for both gauge and domain-wall fermion fields on the finite box, and introduce flavor-chiral Ward-Takahashi identities to calculate the renormalization factors. As a test of the method, we numerically confirm the expected relation that ZV~=ZA in DWQCD. Employing two different box sizes for the numerical simulations at several values of the gauge coupling constant g2 and the domain-wall height M, we extrapolate ZV to infinite volume to remove a/L errors. We finally give the interpolation formula of ZV in the infinite volume as a function of g2 and M.
journal title
Physical Review D
volume
Volume 70
start page
034503
date of issued
2004
publisher
The American Physical Society
issn
1550-7998
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2004 The American Physical Society
relation is version of URL
http://dx.doi.org/10.1103/PhysRevD.70.034503
department
Graduate School of Science