LU TP 95-32
THE LINKED DIPOLE CASCADE MODEL
Talk given at the Zakopane Meeting 1995
In this talk I would like to report a set of new developments
in the Lund Model for Quark and Gluon Interactions. We feel that by the
completion of the Linked Dipole Chain Model (developed together with
G. Gustafson and a graduate student J. Samuelsson) {\em we have a complete
description of all kinds of perturbative QCD interactions} (although
only a few are reported in my talk) {\em in terms of dipoles}. This model
describes the evolution of the wave function (or rather the square of it
as measured by the partonic structure functions) in terms of space-like
cascades of connected dipoles with both a mass and a virtuality. In the
same way the Lund Dipole Cascade Model, which has been presented before
repeatedly, describes the time-like perturbative cascades in terms of the
building of dipoles decaying into smaller dipoles until the fragmentation
process (in terms of the Lund String Fragmentation Model) into hadrons (``the
ultimate dipoles'') sets in.