ABSTRACT
X. THE E FFE C T OF RANDOM IM PURITIES AND MISCELLANEOUS TOPICS
We discuss the effect of random impurities in some
detail, with emphasis upon basic concepts and ideas. The
RG approach needs to be formulated slightly differently
when quenched impurities are present. We also include a
b r ie f section on the use of graphs in studying quenched
impurities. The self-avoiding random walk problem is
then discussed, and its connection to the crit ica l behavior
of the n = 0 Ginzburg-Landau model is demonstrated.
