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

Abstract

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.

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

References in corpus (2)

• Density-Matrix Spectra of Solvable Fermionic Systems
• A two-dimensional algorithm of the density matrix renormalization group

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