DOI 10.1007/s100529900221
Coupled gap equations for the screening masses
in the SU(2) Higgs model
P. Petreczky - Zs. Szép - A. Patkós
Department of Atomic Physics, Eötvös University,
1117 Pázmány Péter sétány 1/A, Budapest, Hungary
Received: 7 May 1999 / Revised version: 6 July 1999 / Published online: 16 November 1999
Abstract
The complete set of static screening masses is determined
for the SU(2) Higgs model from one-loop coupled gap equations.
Results from the version containing scalar fields both in the
fundamental
and adjoint representations are compared with the model arising
when
integration over the adjoint scalar field is performed.
A non-perturbative and non-linear mapping between the couplings
of the
two models is proposed which exhibits perfect decoupling of
the heavy
adjoint scalar field. Also the alternative of a gauge invariant
mass
resummation is investigated in the high temperature phase.
Copyright Springer-Verlag 2000
