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Spectrum of quarks in QCD2

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arxiv 1201.6220 v1 pith:MHQMOHBQ submitted 2012-01-30 hep-ph

Spectrum of quarks in QCD2

classification hep-ph
keywords functiongreenpositivesquaredanalysisanalyticallyaxisbranch
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The properties of the gauge invariant two-point quark Green's function are studied in the large-Nc limit of two-dimensional QCD. The analysis is done by means of an exact integrodifferential equation. The Green's function is found infrared finite, with singularities in the momentum squared variable represented by an infinite number of threshold type branch points with a power -3/2, starting at positive mass squared values, with cuts lying on the positive real axis. The expression of the Green's function is analytically determined.

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