%0 Journal Article
%T Quantum Phases of the Shraiman-Siggia Model
%A Subir Sachdev
%J Physics
%D 1993
%I arXiv
%R 10.1103/PhysRevB.49.6770
%X We examine phases of the Shraiman-Siggia model of lightly-doped, square lattice quantum antiferromagnets in a self-consistent, two-loop, interacting magnon analysis. We find magnetically-ordered and quantum-disordered phases both with and without incommensurate spin correlations. The quantum disordered phases have a pseudo-gap in the spin excitation spectrum. The quantum transition between the magnetically ordered and commensurate quantum-disordered phases is argued to have the dynamic critical exponent $z=1$ and the same leading critical behavior as the disordering transition in the pure $O(3)$ sigma model. The relationship to experiments on the doped cuprates is discussed.
%U http://arxiv.org/abs/cond-mat/9311037v1