Flavor-mixing effects on the QCD phase diagram at non-vanishing isospin chemical potential: one or two phase transitions?

被引：134
作者：
Frank, M
Buballa, M
Oertel, M
机构：
[1] Tech Univ Darmstadt, Fachbereich Math, D-64289 Darmstadt, Germany
[2] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany
[3] Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany
[4] IPN Lyon, F-69622 Villeurbanne, France
来源：
PHYSICS LETTERS B | 2003年 / 562卷 / 3-4期
关键词：
QCD phase diagram; critical endpoints; isospin chemical potential;
D O I：
10.1016/S0370-2693(03)00607-5
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate effects of a fixed nonzero isospin chemical potential on the mu(B)-T phase diagram of strongly interacting matter using a Nambu-Jona-Lasinio-type four fermion interaction. We focus on the influence of a flavor-mixing interaction induced by instantons. We find that already for rather moderate values of the coupling strength in the flavor-mixing channel the recent findings of two separate phase transitions do not persist. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：221 / 226
页数：6
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