title: Large scale behavior of a two-dimensional model of anisotropic branched polymers.
abstract: We study critical properties of anisotropic branched polymers modeled by semi-directed lattice animals on a triangular lattice. Using the exact transfer-matrix approach on strips of quite large widths and phenomenological renormalization group analysis, we obtained pretty good estimates of various critical exponents in the whole high-temperature region, including the point of collapse transition. Our numerical results suggest that this collapse transition belongs to the universality class of directed percolation.
authors.affiliation: Faculty of Physics, University of Belgrade, POB 368, 11001 Belgrade, Serbia.
authors.forename: Milan
authors.initials: M
authors.lastname: Knežević
authors.forename: Dragica
authors.initials: D
authors.lastname: Knežević