QCD phase diagram at finite baryon and isospin chemical potentials

Takahiro Sasaki, Yuji Sakai, Hiroaki Kouno, Masanobu Yahiro

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

The phase structure of two-flavor QCD is explored for thermal systems with finite baryon- and isospin-chemical potentials, μB and μiso, by using the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model. The PNJL model with the scalar-type eight-quark interaction can reproduce lattice QCD data at not only μisoB=0, but also μiso>0 and μB=0. In the μisoB-T space, where T is temperature, the critical endpoint of the chiral phase transition in the μB-T plane at μiso=0 moves to the tricritical point of the pion-superfluidity phase transition in the μiso-T plane at μB=0 as μiso increases. The thermodynamics at small T is controlled by √σ2+π2 defined by the chiral and pion condensates, σ and π.

Original languageEnglish
Article number116004
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume82
Issue number11
DOIs
Publication statusPublished - Dec 3 2010

Fingerprint

baryons
pions
quantum chromodynamics
phase diagrams
superfluidity
condensates
quarks
scalars
thermodynamics
interactions
temperature

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

QCD phase diagram at finite baryon and isospin chemical potentials. / Sasaki, Takahiro; Sakai, Yuji; Kouno, Hiroaki; Yahiro, Masanobu.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 82, No. 11, 116004, 03.12.2010.

Research output: Contribution to journalArticle

Sasaki, Takahiro ; Sakai, Yuji ; Kouno, Hiroaki ; Yahiro, Masanobu. / QCD phase diagram at finite baryon and isospin chemical potentials. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2010 ; Vol. 82, No. 11.
@article{fdcb7df7939b42fe8c592fcdd25fc4b9,
title = "QCD phase diagram at finite baryon and isospin chemical potentials",
abstract = "The phase structure of two-flavor QCD is explored for thermal systems with finite baryon- and isospin-chemical potentials, μB and μiso, by using the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model. The PNJL model with the scalar-type eight-quark interaction can reproduce lattice QCD data at not only μiso=μB=0, but also μiso>0 and μB=0. In the μiso-μB-T space, where T is temperature, the critical endpoint of the chiral phase transition in the μB-T plane at μiso=0 moves to the tricritical point of the pion-superfluidity phase transition in the μiso-T plane at μB=0 as μiso increases. The thermodynamics at small T is controlled by √σ2+π2 defined by the chiral and pion condensates, σ and π.",
author = "Takahiro Sasaki and Yuji Sakai and Hiroaki Kouno and Masanobu Yahiro",
year = "2010",
month = "12",
day = "3",
doi = "10.1103/PhysRevD.82.116004",
language = "English",
volume = "82",
journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",
issn = "1550-7998",
number = "11",

}

TY - JOUR

T1 - QCD phase diagram at finite baryon and isospin chemical potentials

AU - Sasaki, Takahiro

AU - Sakai, Yuji

AU - Kouno, Hiroaki

AU - Yahiro, Masanobu

PY - 2010/12/3

Y1 - 2010/12/3

N2 - The phase structure of two-flavor QCD is explored for thermal systems with finite baryon- and isospin-chemical potentials, μB and μiso, by using the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model. The PNJL model with the scalar-type eight-quark interaction can reproduce lattice QCD data at not only μiso=μB=0, but also μiso>0 and μB=0. In the μiso-μB-T space, where T is temperature, the critical endpoint of the chiral phase transition in the μB-T plane at μiso=0 moves to the tricritical point of the pion-superfluidity phase transition in the μiso-T plane at μB=0 as μiso increases. The thermodynamics at small T is controlled by √σ2+π2 defined by the chiral and pion condensates, σ and π.

AB - The phase structure of two-flavor QCD is explored for thermal systems with finite baryon- and isospin-chemical potentials, μB and μiso, by using the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model. The PNJL model with the scalar-type eight-quark interaction can reproduce lattice QCD data at not only μiso=μB=0, but also μiso>0 and μB=0. In the μiso-μB-T space, where T is temperature, the critical endpoint of the chiral phase transition in the μB-T plane at μiso=0 moves to the tricritical point of the pion-superfluidity phase transition in the μiso-T plane at μB=0 as μiso increases. The thermodynamics at small T is controlled by √σ2+π2 defined by the chiral and pion condensates, σ and π.

UR - http://www.scopus.com/inward/record.url?scp=78651294042&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78651294042&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.82.116004

DO - 10.1103/PhysRevD.82.116004

M3 - Article

AN - SCOPUS:78651294042

VL - 82

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

SN - 1550-7998

IS - 11

M1 - 116004

ER -