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Frustration in Finite Density QCD

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arxiv hep-lat/9804020 v2 pith:VO7KIVK6 submitted 1998-04-15 hep-lat

Frustration in Finite Density QCD

classification hep-lat
keywords analysiscanonicaldensityevidencefunctiongrandpartitionbaryonic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present a detailed analysis of the QCD partition function in the Grand Canonical formalism. Using the fugacity expansion we find evidence for numerical instabilities in the standard evaluation of its coefficients. We discuss the origin of this problem and propose an issue to it. The correct analysis shows no evidence for a discontinuity in the baryonic density in the strong coupling limit. The moderate optimism that was inspired by the Grand Canonical Partition Function calculations in the last years has to be considered ill-founded.

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