Analytic continuation from imaginary to real chemical potential in two-color QCD

被引：34

作者：

Cea, Paolo ^{[1
]}

Cosmai, Leonardo

D'Elia, Massimo

Papa, Alessandro

机构：

[1] Univ Bari, Dipartmento Fis, Via Amendola 173, I-70126 Bari, Italy

[2] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[3] Univ Genoa, Dept Phys, I-16146 Genoa, Italy

[4] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy

[5] Univ Calabria, Dipartimento Fis, I-87036 Cosenza, Italy

[6] Ist Nazl Fis Nucl, Grp Collegato Cosenza, I-87036 Cosenza, Italy

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2007年 / 02期

关键词：

lattice QCD; nonperturbative effects;

D O I：

10.1088/1126-6708/2007/02/066

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The method of analytic continuation from imaginary to real chemical potential is one of the most powerful tools to circumvent the sign problem in lattice QCD. Here we test this method in a theory, two-color QCD, which is free from the sign problem. We find that the method gives reliable results, within appropriate ranges of the chemical potential, and that a considerable improvement can be achieved if suitable functions are used to interpolate data with imaginary chemical potential.

引用

页数：21

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