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ID 14512
file
creator
CP-PACS Collaboration
Namekawa, Y
Aoki, S
Fukugita, M
Ishizuka, N
Iwasaki, Y
Kanaya, K
Kaneko, T
Kuramashi, Y
Lesk, V. I.
Taniguch, Y
Ukawa, A
Umeda, T
Yoshié, T
NDC
Physics
abstract
We explore the region of small sea quark masses belowmps/mv= 0.5 in two-flavor QCD using a mean-field improved clover quark action and an RG-improved gauge action ata 0.2 fm on 123 × 24 and 163 × 24 lattices. We find that instability of the standard BiCGStab algorithm at small quark masses can be mostly removed by the BiCGStab(DS-L) algorithm, which employsL-th minimal residual polynomials with a dynamical selection ofL. We also find singular spikes of ΔH in the HMC algorithm at moderate values of Δτ. Nature of the spike is studied. We also study finite-size effects and chiral properties of meson masses.
journal title
Nuclear Physics B Proceedings Supplements
volume
Volume 119
start page
335
end page
337
date of issued
2003
publisher
Elsevier Science B.V.
issn
0920-5632
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
Copyright (c) 2003 Elsevier Science B.V.
relation is version of URL
http://dx.doi.org/10.1016/S0920-5632(03)01540-8
department
Graduate School of Science