STATISTICS OF COLLAPSING LATTICE ANIMALS

We consider several lattice models of branched polymers in dilute solu tion in which the polymer molecule is modelled as a tree or animal. In general the thermodynamic properties of the polymer are determined by monomer-monomer and monomer-solvent interactions. We examine a two-va riable model which incorporates both types of interaction and discuss its relationship to other models which have previously been investigat ed. In particular, we discuss the collapse transition in these models.