Infinite temperature limit of meson spectral functions calculated on the lattice

被引：72

作者：

Karsch, F ^{[1
]}

Laermann, E

Stickan, S

Petreczky, P

机构：

[1] Univ Bielefeld, Fak Phys, D-33615 Bielefeld, Germany

[2] Brookhaven Natl Lab, Dept Phys, Nucl Theory Grp, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW D | 2003年 / 68卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.68.014504

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyze the cutoff dependence of mesonic spectral functions calculated at finite temperature on Euclidean lattices with a finite temporal extent. In the infinite temperature limit we present analytic results for lattice spectral functions calculated with standard Wilson fermions as well as a truncated perfect action. We explicitly determine the influence of "Wilson doublers" on the high momentum structure of the mesonic spectral functions and show that this cutoff effect is strongly suppressed when using an improved fermion action.

引用

页数：11

共 26 条

[1] Application of the maximum entropy method to the (2+1)D four-fermion model [J].