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Title: Two-flavor QCD phases and condensates at finite isospin chemical potential

Abstract

We study the phase structure and condensates of two-flavor QCD at finite isospin chemical potential in the framework of a confining, Dyson-Schwinger equation model. We find that the pion superfluidity phase is favored at high enough isospin chemical potential. A new gauge-invariant mixed quark-gluon condensate induced by isospin chemical potential is proposed based on operator product expansion. We investigate the sign and magnitude of this new condensate and show that it is an important condensate in QCD sum rules at finite isospin density.

Authors:
;  [1]
  1. Department of Physics, Peking University, Beijing 100871 (China) and CCAST (World Laboratory), Post Office Box 8730, Beijing 100080 (China)
Publication Date:
OSTI Identifier:
20995160
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.75.035201; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CONDENSATES; DENSITY; GAUGE INVARIANCE; GLUON CONDENSATION; ISOSPIN; OPERATOR PRODUCT EXPANSION; PIONS; POTENTIALS; QUANTUM CHROMODYNAMICS; QUARKS; SUM RULES; SUPERFLUIDITY

Citation Formats

Zhang Zhao, and Liu Yuxin. Two-flavor QCD phases and condensates at finite isospin chemical potential. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.035201.
Zhang Zhao, & Liu Yuxin. Two-flavor QCD phases and condensates at finite isospin chemical potential. United States. doi:10.1103/PHYSREVC.75.035201.
Zhang Zhao, and Liu Yuxin. Thu . "Two-flavor QCD phases and condensates at finite isospin chemical potential". United States. doi:10.1103/PHYSREVC.75.035201.
@article{osti_20995160,
title = {Two-flavor QCD phases and condensates at finite isospin chemical potential},
author = {Zhang Zhao and Liu Yuxin},
abstractNote = {We study the phase structure and condensates of two-flavor QCD at finite isospin chemical potential in the framework of a confining, Dyson-Schwinger equation model. We find that the pion superfluidity phase is favored at high enough isospin chemical potential. A new gauge-invariant mixed quark-gluon condensate induced by isospin chemical potential is proposed based on operator product expansion. We investigate the sign and magnitude of this new condensate and show that it is an important condensate in QCD sum rules at finite isospin density.},
doi = {10.1103/PHYSREVC.75.035201},
journal = {Physical Review. C, Nuclear Physics},
number = 3,
volume = 75,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}