Exact asymptotics of monomer-dimer model on rectangular semi-infinite lattices
arXiv:cond-mat/0611449 · doi:10.1103/PhysRevE.75.051123
Abstract
By using the asymptotic theory of Pemantle and Wilson, exact asymptotic expansions of the free energy of the monomer-dimer model on rectangular lattices in terms of dimer density are obtained for small values of , at both high and low dimer density limits. In the high dimer density limit, the theoretical results confirm the dependence of the free energy on the parity of , a result obtained previously by computational methods. In the low dimer density limit, the free energy on a cylinder lattice strip has exactly the same first terms in the series expansion as that of infinite lattice.
9 pages, 6 tables