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Analytic calculation of scaling dimensions: Tricritical hard squares and critical hard hexagons

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Abstract

The finite-size corrections, central chargesc, and scaling dimensionsx of tricritical hard squares and critical hard hexagons are calculated analytically. This is achieved by solving the special functional equation or inversion identity satisfied by the commuting row transfer matrices of these lattice models at criticality. The results are expressed in terms of Rogers dilogarithms. For tricritical hard squares we obtainc=7/10,x=3/40, 1/5, 7/8, 6/5 and for hard hexagons we obtainc=4/5,x=2/15, 4/5, 17/15, 4/3, 9/5, in accord with the predictions of conformal and modular invariance.

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  1. Mathematics Department, University of Melbourne, 3052, Parkville, Victoria, Australia

    Andreas Klümper & Paul A. Pearce

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  1. Andreas Klümper
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  2. Paul A. Pearce
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Klümper, A., Pearce, P.A. Analytic calculation of scaling dimensions: Tricritical hard squares and critical hard hexagons. J Stat Phys 64, 13–76 (1991). https://doi.org/10.1007/BF01057867

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