2018 Impact factor 4.843
Particles and Fields
Eur. Phys. J. C 16, 677-681
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