139 citations · 156 across the 2 of their papers we have counts for
2 papers
cond-mat.str-el2006★ 17 cited
A modified triplet-wave expansion method applied to the alternating Heisenberg chain
A. Collins, C. J. Hamer, Zheng Weihong
An alternative triplet-wave expansion formalism for dimerized spin systems is presented, a modification of the 'bond operator' formalism of Sachdev and Bhatt. Projection operators…
cond-mat.str-el2006★ 139 cited
The J1-J2 model: First order phase transition versus deconfinement of spinons
J. Sirker, Zheng Weihong, O. P. Sushkov +1
We revisit the phase transition from the Néel ordered to a valence bond solid (VBS) state in the two-dimensional antiferromagnetic Heisenberg model. In the first part we…