Au-Yang, HelenPerk, Jacques2015-12-080022-4715http://hdl.handle.net/1885/28768We study the q-dependent susceptibility χ(q) of a series of quasiperiodic Ising models on the square lattice. Several different kinds of aperiodic sequences of couplings are studied, including the Fibonacci and silver-mean sequences. Some identities andKeywords: Correlation functions; Golden ratio; Ising model; Quasiperiodicity; Silver mean; Wavevector-dependent susceptibility; Z-invarianceQ-dependent susceptibilities in Ferromagnetic Quasiperiodic Z-invariant Ising Models200710.1007/s10955-006-9213-92015-12-08