Latent Heat Calculation of the 3D q=3, 4, and 5 Potts models by Tensor Product Variational Approach

Details Latent Heat Calculation of the 3D q=3, 4, and 5 Potts models by Tensor Product Variational Approach Latent Heat Calculation of the 3D q=3, 4, and 5 Potts models by Tensor Product Variational Approach

2001-02-23

arxiv.org/abs/cond-mat/0102425v3

Phys. Rev. E 65 (2002) 046702

Physics

Condensed Matter

Statistical Mechanics

RevTeX4 format, 7 pages, 15 figures, submitted to Phys. Rev. E

Scientific paper

10.1103/PhysRevE.65.046702

Three-dimensional (3D) $q$-state Potts models ($q$=3, 4, and 5) are studied by the tensor product variational approach (TPVA), which is a recently developed variational method for 3D classical lattice models. The variational state is given by a two-dimensional (2D) product of local factors, and is improved by way of self-consistent calculations assisted by the corner transfer matrix renormalization group (CTMRG). It should be noted that no a priori condition is imposed for the local factor. Transition temperatures and latent heats are calculated from the observations of thermodynamic functions in both ordered and disordered phases.

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