Series expansions from the corner transfer matrix renormalization group method: the hard squares model

Abstract

The corner transfer matrix renormalization group method is an efficient method for evaluating physical quantities in statistical mechanical models. It originates from Baxter's corner transfer matrix equations and method, and was developed by Nishino and Okunishi in 1996. In this paper, we review and adapt this method, previously used for numerical calculations, to derive series expansions. We use this to calculate 92 terms of the partition function of the hard squares model. We also examine the claim that the method is subexponential in the number of generated terms and briefly analyse the resulting series.

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References in corpus (2)

• Scaling and universality in the 2D Ising model with a magnetic field
• Variational approach to the scaling function of the 2D Ising model in a magnetic field

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