Jo. Andersen, THE ELECTRIC SCREENING MASS IN SCALAR ELECTRODYNAMICS AT HIGH-TEMPERATURE, Zeitschrift fur Physik. C, Particles and fields, 75(1), 1997, pp. 147-154
We study the screening of static electric fields in massless scalar el
ectrodynamics at high temperature and zero chemical potential. Effecti
ve field theory methods are used to separate the contributions from th
e momentum scales T and eT to the electric screening mass. The effects
of the distance scale 1/T are encoded in the parameters of an effecti
ve three-dimensional field theory. The parameters of the effective Lag
rangian can be written as a power series in e(2). The contribution to
physical quantities from the scale 1/eT can be calculated from perturb
ation theory in the effective theory and is an expansion in e starting
at e(3). The electric screening mass squared is computed to order e(4
).