QCD at small baryon number

Abstract

We consider the difficulties of finite density QCD from the canonical formalism. We present results for small baryon numbers, where the sign problem can be controlled, in particular by supplementing the mu=0 sampling with imaginary mu ensembles. We initiate the thermodynamic study of few-nucleon systems, starting with the measurement of the free energy of a few baryons in the confined and deconfined phase. We present a simple model for the phase transition, whose results are in good agreement with the literature, but extend to lower temperatures.

Lattice2004(nonzero), 3 pages, 3 figures. 1 reference added

References in corpus (9)

• The QCD phase diagram for small densities from imaginary chemical potential
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• Finite density QCD via imaginary chemical potential
• A new method to study lattice QCD at finite temperature and chemical potential
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• Fluctuations and Correlations of Conserved Charges in QCD at Finite Temperature with Effective Models
• Breakdown of staggered fermions at nonzero chemical potential
• QCD at Zero Baryon Density and the Polyakov Loop Paradox
• QCD at non-zero density and canonical partition functions with Wilson fermions
• Wilson Fermion Determinant in Lattice QCD
• Lee-Yang zero distribution of high temperature QCD and Roberge-Weiss phase transition
• Winding expansion techniques for lattice QCD with chemical potential
• Properties of canonical determinants and a test of fugacity expansion for finite density lattice QCD with Wilson fermions
• QCD phase transition at real chemical potential with canonical approach
• The QCD phase diagram at zero and small baryon density
• Method for comparing finite temperature field theory results with lattice data
• A filtering technique for the temporally reduced matrix of the Wilson fermion determinant