Phase diagram of two-color lattice QCD in the chiral limit

Shailesh Chandrasekharan, Fu Jiun Jiang

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

We study thermodynamics of strongly coupled lattice QCD with two colors of massless staggered fermions as a function of the baryon chemical potential μ in 3+1 dimensions using a new cluster algorithm. We find evidence that the model undergoes a weak first order phase transition at μ=0 which becomes second order at a finite μ. Symmetry considerations suggest that the universality class of these phase transitions should be governed by a O(N)×O(2) field theory with collinear order, with N=3 at μ=0 and N=2 at μ≠0. The universality class of the second order phase transition at μ≠0 appears to be governed by the decoupled XY fixed point present in the O(2)×O(2) field theory. Finally we show that the quantum (T=0) phase transition as a function of μ is a second order mean field transition.

Original languageEnglish
Article number014506
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume74
Issue number1
DOIs
Publication statusPublished - 2006 Jul 14

Fingerprint

Lattice QCD
Phase Diagram
Phase Transition
quantum chromodynamics
phase diagrams
color
Field Theory
Universality
Cluster Algorithm
First-order Phase Transition
Collinear
Chemical Potential
Baryon
Mean Field
Fermions
Thermodynamics
Fixed point
Symmetry
baryons
fermions

ASJC Scopus subject areas

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

Cite this

Phase diagram of two-color lattice QCD in the chiral limit. / Chandrasekharan, Shailesh; Jiang, Fu Jiun.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 74, No. 1, 014506, 14.07.2006.

Research output: Contribution to journalArticle

@article{a51d195bef7d402eacaaaaa68258fb08,
title = "Phase diagram of two-color lattice QCD in the chiral limit",
abstract = "We study thermodynamics of strongly coupled lattice QCD with two colors of massless staggered fermions as a function of the baryon chemical potential μ in 3+1 dimensions using a new cluster algorithm. We find evidence that the model undergoes a weak first order phase transition at μ=0 which becomes second order at a finite μ. Symmetry considerations suggest that the universality class of these phase transitions should be governed by a O(N)×O(2) field theory with collinear order, with N=3 at μ=0 and N=2 at μ≠0. The universality class of the second order phase transition at μ≠0 appears to be governed by the decoupled XY fixed point present in the O(2)×O(2) field theory. Finally we show that the quantum (T=0) phase transition as a function of μ is a second order mean field transition.",
author = "Shailesh Chandrasekharan and Jiang, {Fu Jiun}",
year = "2006",
month = "7",
day = "14",
doi = "10.1103/PhysRevD.74.014506",
language = "English",
volume = "74",
journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",
issn = "1550-7998",
number = "1",

}

TY - JOUR

T1 - Phase diagram of two-color lattice QCD in the chiral limit

AU - Chandrasekharan, Shailesh

AU - Jiang, Fu Jiun

PY - 2006/7/14

Y1 - 2006/7/14

N2 - We study thermodynamics of strongly coupled lattice QCD with two colors of massless staggered fermions as a function of the baryon chemical potential μ in 3+1 dimensions using a new cluster algorithm. We find evidence that the model undergoes a weak first order phase transition at μ=0 which becomes second order at a finite μ. Symmetry considerations suggest that the universality class of these phase transitions should be governed by a O(N)×O(2) field theory with collinear order, with N=3 at μ=0 and N=2 at μ≠0. The universality class of the second order phase transition at μ≠0 appears to be governed by the decoupled XY fixed point present in the O(2)×O(2) field theory. Finally we show that the quantum (T=0) phase transition as a function of μ is a second order mean field transition.

AB - We study thermodynamics of strongly coupled lattice QCD with two colors of massless staggered fermions as a function of the baryon chemical potential μ in 3+1 dimensions using a new cluster algorithm. We find evidence that the model undergoes a weak first order phase transition at μ=0 which becomes second order at a finite μ. Symmetry considerations suggest that the universality class of these phase transitions should be governed by a O(N)×O(2) field theory with collinear order, with N=3 at μ=0 and N=2 at μ≠0. The universality class of the second order phase transition at μ≠0 appears to be governed by the decoupled XY fixed point present in the O(2)×O(2) field theory. Finally we show that the quantum (T=0) phase transition as a function of μ is a second order mean field transition.

UR - http://www.scopus.com/inward/record.url?scp=33745785216&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33745785216&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.74.014506

DO - 10.1103/PhysRevD.74.014506

M3 - Article

AN - SCOPUS:33745785216

VL - 74

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

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

SN - 1550-7998

IS - 1

M1 - 014506

ER -