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ID 18654
本文ファイル
著者
Aoki, Sinya
Burkhalter, Rudolf
Fukugita, Masataka
Hashimoto, Shoji
Ishizuka, Naruhito
Iwasaki, Yoichi
Kanaya, Kazuyuki
Kaneko, Takashi
Kuramashi, Yoshinobu
Taniguchi, Yusuke
Ukawa, Akira
Yoshie, Tomoteru
抄録(英)
We apply the maximum entropy method to extract the spectral functions for pseudoscalar and vector mesons from hadron correlators previously calculated at four different lattice spacings in quenched QCD with the Wilson quark action. We determine masses and decay constants for the ground and excited states of the pseudoscalar and vector channels from the position and area of peaks in the spectral functions. We obtain the results mp1=660(590) MeV and mr 1=1540(570) MeV for the first excited state masses, in the continuum limit of quenched QCD. We also find unphysical states that have an infinite mass in the continuum limit, and argue that they are bound states of two doublers of the Wilson quark action. If the interpretation is correct, this is the first time that the state of doublers has been identified in lattice QCD numerical simulations.
掲載誌名
Physical review D
65巻
1号
開始ページ
014501-1
終了ページ
014501-16
出版年月日
2001-11-20
出版者
American Physical Society
ISSN
1550-7998
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 2002 American Physical Society.
関連情報URL
部局名
理学研究科