Continuum limit of lattice QCD with staggered quarks in the quenched approximation: A critical role for the chiral extrapolation

被引：20

作者：

Bernard, C ^{[1
]}

Blum, T

DeTar, C

Gottlieb, S

Heller, UM

Hetrick, JE

McNeile, C

Rummukainen, K

Sugar, R

Toussaint, D

机构：

[1] Washington Univ, St Louis, MO 63130 USA

[2] Brookhaven Natl Lab, Upton, NY 11973 USA

[3] Univ Utah, Salt Lake City, UT 84112 USA

[4] Indiana Univ, Bloomington, IN 47405 USA

[5] Florida State Univ, Supercomp Computat Res Inst, Tallahassee, FL 32306 USA

[6] Univ Pacific, Stockton, CA 95211 USA

[7] NORDITA, DK-2100 Copenhagen O, Denmark

[8] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[9] Univ Arizona, Tucson, AZ 85721 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.81.3087

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate the light quark spectrum of lattice QCD in the quenched approximation using staggered quarks. We take the light quark mass, infinite volume, continuum limit. With nonlinear chiral extrapolations, we find that the nucleon to rho mass ratio is m(N)/m(rho) = 1.254 +/- 0.018 +/- 0.028, where the errors are statistical and systematic (within the quenched approximation), respectively. Since the experimental value is 1.22, our results indicate that the error due to quenching is less than or equal to 5%. [S0031-9007(98)07361-X].

引用

页码：3087 / 3090

页数：4

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