Mode condensation in a hierarchical system

Deepak Kumar, ; Kamlesh, Kamlesh (1986) Mode condensation in a hierarchical system Physical Review Letters, 57 (24). pp. 3101-3104. ISSN 0031-9007

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A spherical model of Ising spins, placed on sites that are arranged in a cluster hierarchy, is studied. For the ferromagnetic transition, the critical exponents are found to have nonuniversal values in a certain range of system parameters, while they assume classical values in another range. Correlation functions show a behavior which is very different from the uniform systems. For antiferromagnetic interactions, the system has no transition, which is related to the fact that condensation cannot occur in localized modes.

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ID Code:9894
Deposited On:02 Nov 2010 10:30
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