Variational study of hard-core bosons in a two-dimensional optical lattice using projected entangled pair states

V. Murg; F. Verstraete; J. I. Cirac

doi:10.1103/PhysRevA.75.033605

Variational study of hard-core bosons in a two-dimensional optical lattice using projected entangled pair states

V. Murg, F. Verstraete, J. I. Cirac

Quantum Optics, Quantum Nanophysics and Quantum Information

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Abstract

We have studied the system of hard-core bosons on a two-dimensional optical lattice using a variational algorithm based on projected entangled-pair states. We have investigated the ground-state properties of the system as well as the responses of the system to sudden changes in the parameters. We have compared our results to mean-field results based on a Gutzwiller ansatz.

Original language	English
Article number	033605
Number of pages	8
Journal	Physical Review A
Volume	75
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevA.75.033605
Publication status	Published - Mar 2007

Austrian Fields of Science 2012

103025 Quantum mechanics

Keywords

ULTRACOLD ATOMS
TRANSITION
SUPERFLUID
INSULATOR
GAS

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10.1103/PhysRevA.75.033605

http://arxiv.org/abs/cond-mat/0611522

Cite this

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title = "Variational study of hard-core bosons in a two-dimensional optical lattice using projected entangled pair states",

abstract = "We have studied the system of hard-core bosons on a two-dimensional optical lattice using a variational algorithm based on projected entangled-pair states. We have investigated the ground-state properties of the system as well as the responses of the system to sudden changes in the parameters. We have compared our results to mean-field results based on a Gutzwiller ansatz.",

keywords = "ULTRACOLD ATOMS, TRANSITION, SUPERFLUID, INSULATOR, GAS",

author = "V. Murg and F. Verstraete and Cirac, {J. I.}",

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AB - We have studied the system of hard-core bosons on a two-dimensional optical lattice using a variational algorithm based on projected entangled-pair states. We have investigated the ground-state properties of the system as well as the responses of the system to sudden changes in the parameters. We have compared our results to mean-field results based on a Gutzwiller ansatz.

KW - ULTRACOLD ATOMS

KW - TRANSITION

KW - SUPERFLUID

KW - INSULATOR

KW - GAS

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Variational study of hard-core bosons in a two-dimensional optical lattice using projected entangled pair states

Abstract

Austrian Fields of Science 2012

Keywords

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Cite this