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Three and Two Colours Finite Density QCD at Strong Coupling: A New Look

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arxiv hep-lat/9910015 v1 pith:EIZWNFII submitted 1999-10-06 hep-lat

Three and Two Colours Finite Density QCD at Strong Coupling: A New Look

classification hep-lat
keywords finitesimulationsdensityagreesalgorithmanalyticalapproximationbehaviour
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Simulations in finite density, beta=0 lattice QCD by means of the Monomer-Dimer-Polymer algorithm show a signal of first order transition at finite temporal size. This behaviour agrees with predictions of the mean field approximation, but is difficult to reconcile with infinite mass analytical solution. The MDP simulations are considered in detail and severe convergence problems are found for the SU(3) gauge group, in a wide region of chemical potential. Simulations of SU(2) model show discrepancies with MDP results as well.

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