Rigorous arguments against current wisdoms in finite density QCD

被引：9

作者：

Aloisio, R ^{[1
]}

Azcoiti, V

Di Carlo, G

Galante, A

Grillo, AF

机构：

[1] Univ Aquila, Dipartimento Fis, I-67100 Laquila, Italy

[2] Univ Zaragoza, Fac Ciencias, Dept Fis Teor, E-50009 Zaragoza, Spain

[3] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[4] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Assergi, Aquila, Italy

来源：

PHYSICS LETTERS B | 1999年 / 453卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(99)00372-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

QCD at finite chemical potential is analytically investigated in the region of large bare fermion masses. We show that, contrary to the general wisdom, the phase of the fermion determinant is irrelevant at zero temperature. However if the system is put at finite temperature, the contribution of the phase is finite. We also discuss on the quenched approximation and suggest that the origin of the failure of this approximation in finite density QCD could relay on the fundamental role that Pauli exclusion principle plays in this case. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：275 / 280

页数：6

共 11 条

[1] First order phase transition in finite density QCD using the modulus of the Dirac determinant [J].