Journal of Physics C Solid State Physics

Ising-like behaviour of the Ashkin-Teller model

J. R. Drugowich de Felício, R. Köberle, L. Nunes de Oliveira

Published Aug 20, 1982• 4 citations

Abstract

We show that the Ashkin-Teller model has Ising critical exponents, in the region where the model has two phase transitions.The proof follows from mapping the ground state of the time-continuous Ashkin-Teller Hamiltonian onto that of the Ising chain in a transverse field.

DOI: 10.1088/0022-3719/15/23/009

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