| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
Lattice gauge action suppressing near-zero modes of HW |
|
言語 |
en |
| 作成者 |
Fukaya, Hidenori
Hashimoto, Shoji
Ishikawa, Ken-Ichi
Kaneko, Takashi
Matsufuru, Hideo
Onogi, Tetsuya
Yamada, Norikazu
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
権利情報 |
Copyright (c) 2006 The American Physical Society. |
| 内容記述 |
|
|
内容記述 |
We propose a lattice action including unphysical Wilson fermions with a negative mass m0 of the order of the inverse lattice spacing. With this action, the exact zero mode of the Hermitian Wilson-Dirac operator HW(m0) cannot appear and near-zero modes are strongly suppressed. By measuring the spectral density rho(lambdaW), we find a gap near lambdaW=0 on the configurations generated with the standard and improved gauge actions. This gap provides a necessary condition for the proof of the exponential locality of the overlap-Dirac operator by Hernandez, Jansen, and Lüscher. Since the number of near-zero modes is small, the numerical cost to calculate the matrix sign function of HW(m0) is significantly reduced, and the simulation including dynamical overlap fermions becomes feasible. We also introduce a pair of twisted mass pseudofermions to cancel the unwanted higher mode effects of the Wilson fermions. The gauge coupling renormalization due to the additional fields is then minimized. The topological charge measured through the index of the overlap-Dirac operator is conserved during continuous evolutions of gauge field variables. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
American Physical Society |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1103/PhysRevD.74.094505 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
http://dx.doi.org/10.1103/PhysRevD.74.094505 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1550-7998 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00773624 |
| 開始ページ |
|
|
開始ページ |
094505-1 |
| 書誌情報 |
Physical Review D
Physical Review D
巻 74,
p. 094505-1-094505-10,
発行日 2006-11-03
|
| 旧ID |
19264 |
PhysRevD_74_094505.pdf (1001.8 KB)
