The QCD Quark Propagator in Coulomb Gauge and - Institut für Physik
The QCD Quark Propagator in Coulomb Gauge and - Institut für Physik
The QCD Quark Propagator in Coulomb Gauge and - Institut für Physik
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Chapter 5. Meson Observables, Diquark Conf<strong>in</strong>ement <strong>and</strong> Radii 51<br />
1<br />
0,8<br />
0,6<br />
0,4<br />
h(p 2 ), µ IR<br />
= 10 -2<br />
h(p 2 ), µ IR<br />
= 10 -3<br />
h(p 2 ), µ IR<br />
= 10 -4<br />
g(p 2 ), µ IR<br />
= 10 -2<br />
g(p 2 ), µ IR<br />
= 10 -3<br />
g(p 2 ), µ IR<br />
= 10 -4<br />
0,2<br />
0<br />
0 0,1 0,2 0,3<br />
p 2<br />
Figure 5.2: Pion Bethe-Salpeter amplitude components g <strong>and</strong> h as functions of the <strong>in</strong>frared<br />
regulator µ IR . For convenience, the amplitudes are normalised such that h(0) = 1. All<br />
quantities are given <strong>in</strong> appropriate units of √ σ c .<br />
1<br />
0.8<br />
0.6<br />
0.4<br />
h(p 2 ), µ IR<br />
= 10 -2<br />
h(p 2 ), µ IR<br />
= 10 -3<br />
h(p 2 ), µ IR<br />
= 10 -4<br />
g(p 2 )/(10*µ IR<br />
), µ IR<br />
= 10 -2<br />
g(p 2 )/(10*µ IR<br />
), µ IR<br />
= 10 -3<br />
g(p 2 )/(10*µ IR<br />
), µ IR<br />
= 10 -4<br />
0.2<br />
0<br />
0 0.1 0.2 0.3<br />
p 2<br />
Figure 5.3: Same as fig. 5.2 for the scalar diquark.
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