Folding transitions of the triangular lattice with defects

Abstract

A recently introduced model describing the folding of the triangular lattice is generalized allowing for defects in the lattice and written as an Ising model with nearest-neighbor and plaquette interactions on the honeycomb lattice. Its phase diagram is determined in the hexagon approximation of the cluster variation method and the crossover from the pure Ising to the pure folding model is investigated, obtaining a quite rich structure with several multicritical points. Our results are in very good agreement with the available exact ones and extend a previous transfer matrix study.

16 pages, latex, 5 postscript figures

References in corpus (5)

• Entropy of Folding of the Triangular Lattice
• Folding Transition of the Triangular Lattice
• On the Crumpling Transition in Crystalline Random Surfaces
• Multicritical Points And Reentrant Phenomenon In The BEG Model
• Three-dimensional Folding of the Triangular Lattice

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