arXiv:cond-mat/9705072 · Journal of the Physical Society of Japan

Corner Transfer Matrix Algorithm for Classical Renormalization Group

Tomotoshi Nishino, Kouichi Okunishi

Published Oct 15, 1997• 202 citations

Abstract

We report a real-space renormalization group (RSRG) algorithm, which is formulated through Baxter's corner transfer matrix (CTM), for two-dimensional (d = 2) classical lattice models. The new method performs the renormalization group transformation according to White's density matrix algorithm, so that variational free energies are minimized within a restricted degree of freedom m. As a consequence of the renormalization, spin variables on each corner of CTM are replaced by a m-state block spin variable. It is shown that the thermodynamic functions and critical exponents of the q = 2, 3 Potts models can be precisely evaluated by use of the renormalization group method.

DOI: 10.1143/jpsj.66.3040

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