Lattice QCD at finite density

Abstract

QCD at finite density presents specific challenges to lattice gauge theory. Nonetheless, a region of the QCD phase diagram up to moderately large baryon chemical potentials has been successfully explored on the lattice and new results and idea are continuously emerging. I will outline the lattice formulation of QCD, introduce the calculational schemes currently used to treat a nonzero baryon density, and mention lattice methods alternative to MonteCarlo, including the strong coupling expansion which might give access to the the superconducting phase of QCD. The results for the critical line, and the different phases will be discussed highlighting the strength of the different methods, as well as the possible comparisons with phenomenological models.

14 pages; to appear in the proceedings of Workshop on Finite Density QCD at Nara, Nara, Japan, 10-12 July 2003

References in corpus (7)

• The Condensed Matter Physics of QCD
• Quasiparticle Description of Hot QCD at Finite Quark Chemical Potential
• Lattice QCD at finite T and μ
• The Condensed Matter Limit of Relativistic QFT
• Order from disorder in lattice QCD at high density
• QCD Critical Region and Quark Gluon Plasma from an Imaginary mu_B
• Lattice QCD at non-vanishing density: phase diagram, equation of state

Cited by in corpus (16)

• QCD thermodynamics from an imaginary mu_B: results on the four flavor lattice model
• Dense Quarks, and the Fermion Sign Problem, in a SU(N) Matrix Model
• The strongly interacting Quark Gluon Plasma, and the critical behaviour of QCD at imaginary chemical potential
• Model study of the sign problem in the mean-field approximation
• Phase diagram of QCD at finite temperature and chemical potential from lattice simulations with dynamical Wilson quarks
• Phase diagram of QCD with four quark flavors at finite temperature and baryon density
• Properties of hadron screening masses at small baryonic density
• Phase-diagram of two-color lattice QCD in the chiral limit
• Chiral crystals in strong-coupling lattice QCD at nonzero chemical potential
• Quasiparticle Model of Quark-Gluon Plasma at Imaginary Chemical Potential
• Finite Density QCD: a New Approach
• Tricritical point of lattice QCD with Wilson quarks at finite temperature and density
• Existence of positive representations for complex weights
• A semi-variational approach to QCD at finite temperature and baryon density
• Silver Blaze Puzzle in 1/Nc Expansions of Cold and Dense QCD Matter
• Lattice QCD at finite density: imaginary chemical potential