期刊
COMPUTER PHYSICS COMMUNICATIONS
卷 153, 期 1, 页码 31-51出版社
ELSEVIER
DOI: 10.1016/S0010-4655(02)00874-3
关键词
-
In lattice QCD it is possible, in principle, to determine the parameters in the effective chiral Lagrangian (including weak interaction couplings) by performing numerical simulations in the epsilon-regime, i.e. at quark masses where the physical extent of the lattice is much smaller than the Compton wave length of the pion. The use of a formulation of the lattice theory that preserves chiral symmetry is attractive in this context, but the numerical implementation of any such approach requires special care in this kinematical situation due to the presence of some very low eigenvalues of the Dirac operator. We discuss a set of techniques (low-mode preconditioning and adapted-precision algorithms in particular) that make such computations numerically safe and more efficient by a large factor. (C) 2003 Elsevier Science B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据