Modulated phases in magnetic models frustrated by long-range interactions
Abstract
We study an Ising model in one dimension with short range ferromagnetic and long range (power law) antiferromagnetic interactions. We show that the zero temperature phase diagram in a (longitudinal) field H involves a sequence of up and down domains whose size varies continuously with H, between -Hc and Hc which represent the edge of the ferromagnetic up and down phases. The implications of long range interaction in many body systems are discussed.
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