Solving the Complex Phase Problem in a QCD Related Model

Abstract

We discuss an effective theory for QCD at finite chemical potential and non-zero temperature, where QCD is reduced to its center degrees of freedom. The effective action can be mapped to a flux representation, where the complex phase problem is solved and the theory accessible to Monte Carlo techniques. In this work, we use a generalized Prokof'ev-Svistunov worm algorithm to perform the simulations and determine the phase diagram as a function of temperature, quark mass and chemical potential. It turns out that the transition is qualitatively as expected for QCD.

6 pages and 3 figures, proceedings for "Excited QCD", Les Houches, France, 20 - 25 February, 2011

References in corpus (3)

• Flux representation of an effective Polyakov loop model for QCD thermodynamics
• The QCD phase diagram according to the center group
• Canonical fermion determinants in lattice QCD - Numerical evaluation and properties

Cited by in corpus (6)

• The QCD equation of state from the lattice
• Lattice study of the Silver Blaze phenomenon for a charged scalar phi-4 field
• Monte Carlo simulation of the SU(3) spin model with chemical potential in a flux representation
• Gauge and matter fields as surfaces and loops - an exploratory lattice study of the Z(3) Gauge-Higgs model
• New developments for dual methods in lattice field theory at non-zero density
• Exploring the worldline formulation of the Potts model