Au-Yang, Helen; Perk, Jacques H.H. - In: Physica A: Statistical Mechanics and its Applications 321 (2003) 1, pp. 81-89
New results are presented for the wavevector-dependent susceptibility of Z-invariant periodic and quasiperiodic Ising models in the scaling limit, generalizing old results of Tracy and McCoy for the square lattice. Explicit results are worked out for the two leading singular terms of the...