Light Hadron Masses in Quantum Chromodynamics with Valence Wilson Quarks at β=6.25 from a Parallel PC Cluster

作     者：梅仲豪 EricB.GREGORY 

作者机构：DepartmentofPhysicsZhongshanUniversityGuangzhou510275 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2002年第19卷第5期

页      面：636-639页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：国家自然科学基金国家杰出青年科学基金 广东省自然科学基金 国家教育部项目 中山大学高等学术研究中心项目 

主　　题：Quantum theory 

摘      要：We present the results for π, ρ, proton and Δ masses from our recently built Pentium cluster and compare with the quenched Wilson fermion data presented by MILC and GF11 collaborations [***.B (***.) 60A(1998)3, Nucl. Phys. B 430(1994)179] at β = 6/g2=5.7 and 5.85 on the 83×32 lattice. New data are shown at β=6.25 on the 123×36 and 163×32 lattices. Such a large β value is useful for extrapolating the lattice results to the continuum limit. The smearing technique is systematically investigated and can greatly improve the spectrum data.