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On the Functional Integral Theory of Systems with Kinematical Interaction

L. V. Popovich·M. V. Medvedev
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Abstract

We propose a systematic way to investigate the low-temperature thermodynamic properties of quantum spin systems subject to the restriction that only a finite number of bosons may occupy a single lattice site. Such a kinematical interaction results in appearance of a temperature dependent chemical potential. Its low-temperature asymptotics is calculated self-consistently using the functional integration technique.

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L. V. Popovich, M. V. Medvedev. 1998-03-17. On the Functional Integral Theory of Systems with Kinematical Interaction. https://doi.org/10.1016/s0375-9601(98)00553-2

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