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Many-Body Quantum Theory – Verstraete Group

Variational study of hard-core bosons in a 2-D optical lattice using Projected Entangled Pair States (PEPS)

Author(s): V. Murg, F. Verstraete, J. I. Cirac

Journal: Phys. Rev. A

Volume: 75

Page(s): 033605

Year: 2007

DOI Number: 10.1103/PhysRevA.75.033605

Link: Link to publication


We have studied the system of hard-core bosons on a 2-D optical lattice using a variational algorithm based on projected entangled-pair states (PEPS). 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.


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