Classical simulation of infinite-size quantum lattice systems in two spatial dimensions

Details Classical simulation of infinite-size quantum lattice systems in two spatial dimensions Classical simulation of infinite-size quantum lattice systems in two spatial dimensions

2007-03-29

arxiv.org/abs/cond-mat/0703788v4

Physical Review Letters 101, 250602 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 6 figures, 1 table. Revised version, with new diagrams and plots. The results on classical systems can now be found a

Scientific paper

10.1103/PhysRevLett.101.250602

We present an algorithm to simulate two-dimensional quantum lattice systems in the thermodynamic limit. Our approach builds on the {\em projected entangled-pair state} algorithm for finite lattice systems [F. Verstraete and J.I. Cirac, cond-mat/0407066] and the infinite {\em time-evolving block decimation} algorithm for infinite one-dimensional lattice systems [G. Vidal, Phys. Rev. Lett. 98, 070201 (2007)]. The present algorithm allows for the computation of the ground state and the simulation of time evolution in infinite two-dimensional systems that are invariant under translations. We demonstrate its performance by obtaining the ground state of the quantum Ising model and analysing its second order quantum phase transition.

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