Structure of the Gauge Invariant Quark Green’s Function in QCD2

Structure of the Gauge Invariant Quark Green’s Function in QCD2

We study, in two-dimensional QCD and in the large- N c limit, the properties of the gauge invariant quark Green’s function, defined with a path-ordered phase factor along a straight line. The analysis is done by means of an exact integrodifferential equation. The Green’s function is found to be infr...

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Veröffentlicht in:Few-Body Systems 2012-07, Vol.53 (1-2), p.111-116
1. Verfasser: Sazdjian, H.
Format: Artikel
Sprache:eng
Schlagworte:
Atomic
Hadrons
Heavy Ions
Molecular
Nuclear Physics
Nuclear Theory
Optical and Plasma Physics
Particle and Nuclear Physics
Particle physics
Physics
Physics and Astronomy
Theoretical physics
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Beschreibung
Zusammenfassung:We study, in two-dimensional QCD and in the large- N c limit, the properties of the gauge invariant quark Green’s function, defined with a path-ordered phase factor along a straight line. The analysis is done by means of an exact integrodifferential equation. The Green’s function is found to be infrared finite, with singularities represented by an infinite number of threshold type branch points with a power −3/2, starting at positive mass squared values. Its expression is analytically determined.
ISSN:0177-7963
1432-5411
DOI:10.1007/s00601-011-0253-6