Ground state projection of quantum spin systems in the valence bond basis

Details Ground state projection of quantum spin systems in the valence bond basis Ground state projection of quantum spin systems in the valence bond basis

2005-09-21

arxiv.org/abs/cond-mat/0509558v1

Physics

Condensed Matter

Strongly Correlated Electrons

4+ pages, accepted for publication in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.95.207203

A Monte Carlo method for quantum spin systems is formulated in the basis of valence bond (singlet pair) states. The non-orthogonality of this basis allows for an efficient importance-sampled projection of the ground state out of an arbitrary state. The method provides access to resonating valence-bond physics, enables a direct improved estimator for the singlet-triplet gap, and extends the class of models that can be studied without negative-sign problems. As a demonstration, the valence bond distribution in the ground state of the 2D Heisenberg antiferromagnet is calculated. Generalizations of the method to fermion systems are also discussed.

Affiliated with

Also associated with

No associations

Rating

Ground state projection of quantum spin systems in the valence bond basis does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Ground state projection of quantum spin systems in the valence bond basis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ground state projection of quantum spin systems in the valence bond basis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-487841