- 94-290 Salas, J.
- Low--Temperature Series for Renormalized Operators: the
Ferromagnetic Square--Lattice Ising Model
Sep 19, 94
(auto. generated ps),
of related papers
Abstract. A method for computing low--temperature series for renormalized operators
in the two--dimensional Ising model is proposed.
Series for the renormalized magnetization and
nearest--neighbor correlation function are given for the majority rule
transformation on $2 \times 2$ blocks and random tie--breaker.
These series are applied to the study at very low temperature
of the first--order phase transition
undergone by this model.
We analyze how truncation in the renormalized Hamiltonian leads to
spurious discontinuities of the Renormalization Group transformation.