An exact algorithm for three-flavor QCD with O(a)-improved Wilson fermions

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

Yoshie T

Nuclear Physics B - Proceedings Supplements

We present an exact dynamical QCD simulation algorithm for the O(a)-improved Wilson fermion with odd number of flavors. Our algorithm is an extension of the non-Hermitian polynomials HMC algorithm proposed by Takaishi and de Forcrand previously. In our algorithm, the systematic errors caused by the polynomial approximation of the inverse of Dirac operator is removed by a noisy-Metropolis test. For one flavor quark it is achieved by taking the square root of the correction matrix explicitly. We test our algorithm for the case of Nf = 1 + 1 on a moderately large lattice size (16 3 × 48). The Nf = 2 + 1 case is also investigated.

QCD simulation algorithm

mproved Wilson fermion

non-Hermitian polynomials HMC algorithm

Physics [ 420 ]

eng

Elsevier Science B.V.

Copyright (c) 2002 Elsevier Science B.V.

[ISSN] 0920-5632

[DOI] 10.1016/S0920-5632(01)01934-X

[NCID] AA10719512

[DOI] http://dx.doi.org/10.1016/S0920-5632(01)01934-X isVersionOf