Spin-s wave functions with algebraic order

Narayan, Onuttom ; Sriram Shastry, B. (2004) Spin-s wave functions with algebraic order Physical Review B: Condensed Matter and Materials Physics, 70 (18). 184440_1-184440_7. ISSN 1098-0121

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Official URL: http://prb.aps.org/abstract/PRB/v70/i18/e184440

Related URL: http://dx.doi.org/10.1103/PhysRevB.70.184440

Abstract

We generalize the Gutzwiller wave function for s=½ spin chains to construct a family of wave functions for all s > ½. Through numerical simulations, we demonstrate that the spin spin correlation functions for all s decay as a power law with logarithmic corrections. This is done by mapping the model to a classical statistical mechanical model, which has coupled Ising spin chains with long range interactions. The power law exponents are those of the Wess Zumino Witten models with k=2s. Thus these simple wave functions reproduce the spin correlations of the family of Hamiltonians obtained by the Algebraic Bethe Ansatz.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:50798
Deposited On:26 Jul 2011 12:38
Last Modified:18 May 2016 04:58

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