Assessing the accuracy of projected entangled-pair states on infinite lattices

Journal of Statistical Mechanics: Theory and Experiment | , Vol 2009: pp. P09006

Generalizations of the density-matrix renormalization group method have long been sought after. In this paper, we assess the accuracy of projected entangled-pair states on infinite lattices by comparing with Quantum Monte Carlo results for several non-frustrated spin-1/2 systems. Furthermore, we apply the method to a frustrated quantum system.