The spectrum of lattice QCD with staggered fermions at strong coupling

被引：13

作者：

de Forcrand, Philippe

Kim, Seyong ^{[1
]}

机构：

[1] Sejong Univ, Dept Phys, Seoul 143747, South Korea

[2] CERN, Dept Phys, TH Unit, CH-1211 Geneva 23, Switzerland

[3] ETH, Inst Theoret Phys, CH-8093 Zurich, Switzerland

来源：

PHYSICS LETTERS B | 2007年 / 645卷 / 04期

关键词：

D O I：

10.1016/j.physletb.2006.12.026

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using 4 flavors of staggered fermions at infinite gauge coupling, we compare various analytic results for the hadron spectrum with exact Monte Carlo simulations. Agreement with [O. Martin, Large N gauge theory at strong coupling with chiral fermion, PhD thesis, CALT-68-1048, 1983; O. Martin, B. Sin, Phys. Lett. B 131 (1983) 419; O. Martin, Phys. Lett. B 130 (1983) 411] is very good, at the level of a few percent. Our results give credence to a discrepancy between the baryon mass and the critical chemical potential, for which baryons fill the lattice at zero temperature and infinite gauge coupling. Independent determinations of the latter set it at about 30% less than the baryon mass. The likely explanation is that the nuclear attraction becomes strong at infinite gauge coupling. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：339 / 344

页数：6

共 34 条

[21] THE STRONG COUPLING EXPANSION OF LATTICE GAUGE-THEORIES WITH SUSSKIND FERMIONS [J].