Exploration of sea quark effects in two-flavor QCD with the O(a)-improved Wilson quark action

Nuclear Physics B Proceedings Supplements Volume 106-107 Page 224-226 published_at 2002

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Title ( eng )	Exploration of sea quark effects in two-flavor QCD with the O(a)-improved Wilson quark action
Creator	JLQCD Collaboration Aoki S Burkhalter R Fukugita M Hashimoto S Ishikawa Kenichi Ishizuka N Iwasaki Y Kanaya K Kaneko T Kuramashi Y Okawa Masanori Onogi T Tominaga S Tsutsui N Ukawa A Yamada N Yoshié T
Source Title	Nuclear Physics B Proceedings Supplements
Volume	106-107
Start Page	224
End Page	226
Abstract	We explore sea quark effects in the light hadron mass spectrum in a simulation of two-flavor QCD using the nonperturbatively O(a)-improved Wilson fermion action. In order to identify finite-size effects, light meson masses are measured on 123 × 48, 163 × 48 and 203 × 48 lattices with a 0.1 fm. On the largest lattice, where the finite-size effect is negligible, we find a significant increase of the strange vector meson mass compared to the quenched approximation. We also investigate the quark mass dependence of pseudoscalar meson masses and decay constants and test the consistency with (partially quenched) chiral perturbation theory.
NDC	Physics [ 420 ]
Language	eng
Resource Type	journal article
Publisher	Elsevier Science B.V.
Date of Issued	2002
Rights	Copyright (c) 2002 Elsevier Science B.V.
Publish Type	Author’s Original
Access Rights	open access
Source Identifier	[ISSN] 0920-5632 [DOI] http://dx.doi.org/10.1016/S0920-5632(01)01670-X isVersionOf