Tensor Product Variational Formulation for Quantum Systems
统计力学
2007-05-23 v1
摘要
We consider a variational problem for the two-dimensional (2D) Heisenberg and XY models, using a trial state which is constructed as a 2D product of local weights. Variational energy is calculated by use of the the corner transfer matrix renormalization group (CTMRG) method, and its upper bound is surveyed. The variational approach is a way of applying the density matrix renormalization group method (DMRG) to infinite size 2D quantum systems.
引用
@article{arxiv.cond-mat/0401115,
title = {Tensor Product Variational Formulation for Quantum Systems},
author = {Y. Nishio and N. Maeshima and A. Gendiar and T. Nishino},
journal= {arXiv preprint arXiv:cond-mat/0401115},
year = {2007}
}
备注
5 pages