Latent heat calculation of the three-dimensional4, and 5 Potts models by the tensor product variational approach
- 10 April 2002
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review E
- Vol. 65 (4), 046702
- https://doi.org/10.1103/physreve.65.046702
Abstract
Three-dimensional (3D) q-state Potts models 4, and 5) are studied by the tensor product variational approach, which is a recently developed variational method for 3D classical lattice models. The variational state is given by a 2D product of local factors, and is improved by way of self-consistent calculations assisted by the corner transfer matrix renormalization group. 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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