Choice of integrator in the hybrid Monte Carlo algorithm

被引：22

作者：

Takaishi, T ^{[1
]}

机构：

[1] Hiroshima Univ Econ, Asaminami Ku, Hiroshima 7310192, Japan

来源：

COMPUTER PHYSICS COMMUNICATIONS | 2000年 / 133卷 / 01期

关键词：

lattice QCD; lattice gauge theory; hybrid Monte Carlo; higher order integrator;

D O I：

10.1016/S0010-4655(00)00161-2

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

We study efficiency of higher order integrator schemes for the hybrid Monte Carlo (HMC) algorithm. Numerical tests are performed for Quantum Chrome Dynamics (QCD) with two flavors of Wilson fermions. We compare 2nd, 4th and 6th order integrators at Various quark masses. The performance depends on both volume and quark mass. On currently accessible large lattices (V similar to 24(4)), higher order integrators can be mure efficient than the 2nd order one only in heavy quark region. m(q)a > 0.3. Thus we conclude that for most full QCD simulations, except for heavy quart; case, the usual 2nd order integrator is the best choice. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：6 / 17

页数：12

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