DOI 10.1007/s100520000445
Vacuum structure of a modified MIT bag
R. Hofmann1 - M. Schumann2,3 - T. Gutsche1 - R.D. Viollier3
1 Institut für Theoretische Physik,
Universität Tübingen,
Auf der Morgenstelle 14,
72076 Tübingen,
Germany
2 Institut für Theoretische Physik, Universität Basel,
Klingelbergstrasse 82, 4056 Basel,
Switzerland
3 Institute of Theoretical Physics and Astrophysics, Department
of Physics,
University of Cape Town,
Rondebosch 7701,
South Africa
Received: 4 April 2000 / Published online: 6 July 2000 - © Springer-Verlag 2000
Abstract
An alternative to introducing and subsequently
renormalizing classical parameters in the expression for
the vacuum energy of the MIT bag for quarks
is proposed in the massless case by
appealing to the QCD trace anomaly and scale separation due to
asymptotic freedom. The explicit inclusion of gluons
implies an unrealistically low separation scale.
Copyright Società Italiana di Fisica, Springer-Verlag 2000
