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In summary, invoking asymptotic freedom and
appealing to the QCD trace-anomaly, the linear and
nonlinear boundary condition of the MIT bag model for quarks provide a
reasonable agreement of the calculated canonical vacuum energy with that
found in hadron phenomenology which makes the introduction of phenomenological
parameters redundant. However, the explicit inclusion of gluons drives
the separation scale down to values which are not acceptable.
Marc Schumann
2000-10-16