A variational method based on weighted graph states
Quantum Physics
2007-10-06 v2
Abstract
In a recent article [Phys. Rev. Lett. 97 (2006), 107206], we have presented a class of states which is suitable as a variational set to find ground states in spin systems of arbitrary spatial dimension and with long-range entanglement. Here, we continue the exposition of our technique, extend from spin 1/2 to higher spins and use the boson Hubbard model as a non-trivial example to demonstrate our scheme.
Cite
@article{arxiv.0706.0423,
title = {A variational method based on weighted graph states},
author = {Simon Anders and Hans J. Briegel and Wolfgang Dür},
journal= {arXiv preprint arXiv:0706.0423},
year = {2007}
}