Projected Entangled Pair States at Finite Temperature: Imaginary Time Evolution with Ancillas
Strongly Correlated Electrons
2012-12-07 v2 Quantum Gases
Statistical Mechanics
Quantum Physics
Abstract
A projected entangled pair state (PEPS) with ancillas is evolved in imaginary time. This tensor network represents a thermal state of a 2D lattice quantum system. A finite temperature phase diagram of the 2D quantum Ising model in a transverse field is obtained as a benchmark application.
Cite
@article{arxiv.1209.0454,
title = {Projected Entangled Pair States at Finite Temperature: Imaginary Time Evolution with Ancillas},
author = {Piotr Czarnik and Lukasz Cincio and Jacek Dziarmaga},
journal= {arXiv preprint arXiv:1209.0454},
year = {2012}
}
Comments
7 pages, 9 figures; version accepted to publication in Phys. Rev. B; added new numerical results and references