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arXiv · 0706.0423

A variational method based on weighted graph states

Simon Anders·Hans J. Briegel·Wolfgang Dür
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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.

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Simon Anders, Hans J. Briegel, Wolfgang Dür. 2007-08-20. A variational method based on weighted graph states. https://doi.org/10.1088/1367-2630%2F9%2F10%2F361

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