QCD phase diagram at imaginary baryon and isospin chemical potentials

Yuji Sakai, Hiroaki Kouno, Masanobu Yahiro

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We explore the phase diagram of two-flavor quantum chromodynamics (QCD) at imaginary values of baryon and isospin chemical potentials, μB and μiso, analyzing the thermodynamic potential of QCD analytically and that of the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model numerically. QCD has no pion condensation at imaginary μB and μiso, and therefore has discrete symmetries that are not present at real μB and μiso. The PNJL model possesses all the discrete symmetries. It can reproduce qualitatively lattice QCD data presented very recently.

Original languageEnglish
Article number105007
JournalJournal of Physics G: Nuclear and Particle Physics
Volume37
Issue number10
DOIs
Publication statusPublished - Oct 1 2010

Fingerprint

baryons
quantum chromodynamics
phase diagrams
symmetry
pions
condensation
thermodynamics

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

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

In: Journal of Physics G: Nuclear and Particle Physics, Vol. 37, No. 10, 105007, 01.10.2010.

Research output: Contribution to journalArticle

Sakai, Yuji ; Kouno, Hiroaki ; Yahiro, Masanobu. / QCD phase diagram at imaginary baryon and isospin chemical potentials. In: Journal of Physics G: Nuclear and Particle Physics. 2010 ; Vol. 37, No. 10.
@article{ae67a4085e9f4d6d983e36af783d8861,
title = "QCD phase diagram at imaginary baryon and isospin chemical potentials",
abstract = "We explore the phase diagram of two-flavor quantum chromodynamics (QCD) at imaginary values of baryon and isospin chemical potentials, μB and μiso, analyzing the thermodynamic potential of QCD analytically and that of the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model numerically. QCD has no pion condensation at imaginary μB and μiso, and therefore has discrete symmetries that are not present at real μB and μiso. The PNJL model possesses all the discrete symmetries. It can reproduce qualitatively lattice QCD data presented very recently.",
author = "Yuji Sakai and Hiroaki Kouno and Masanobu Yahiro",
year = "2010",
month = "10",
day = "1",
doi = "10.1088/0954-3899/37/10/105007",
language = "English",
volume = "37",
journal = "Journal of Physics G: Nuclear and Particle Physics",
issn = "0954-3899",
publisher = "IOP Publishing Ltd.",
number = "10",

}

TY - JOUR

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

AU - Sakai, Yuji

AU - Kouno, Hiroaki

AU - Yahiro, Masanobu

PY - 2010/10/1

Y1 - 2010/10/1

N2 - We explore the phase diagram of two-flavor quantum chromodynamics (QCD) at imaginary values of baryon and isospin chemical potentials, μB and μiso, analyzing the thermodynamic potential of QCD analytically and that of the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model numerically. QCD has no pion condensation at imaginary μB and μiso, and therefore has discrete symmetries that are not present at real μB and μiso. The PNJL model possesses all the discrete symmetries. It can reproduce qualitatively lattice QCD data presented very recently.

AB - We explore the phase diagram of two-flavor quantum chromodynamics (QCD) at imaginary values of baryon and isospin chemical potentials, μB and μiso, analyzing the thermodynamic potential of QCD analytically and that of the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model numerically. QCD has no pion condensation at imaginary μB and μiso, and therefore has discrete symmetries that are not present at real μB and μiso. The PNJL model possesses all the discrete symmetries. It can reproduce qualitatively lattice QCD data presented very recently.

UR - http://www.scopus.com/inward/record.url?scp=78149385782&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78149385782&partnerID=8YFLogxK

U2 - 10.1088/0954-3899/37/10/105007

DO - 10.1088/0954-3899/37/10/105007

M3 - Article

AN - SCOPUS:78149385782

VL - 37

JO - Journal of Physics G: Nuclear and Particle Physics

JF - Journal of Physics G: Nuclear and Particle Physics

SN - 0954-3899

IS - 10

M1 - 105007

ER -