33 citations · 72 across the 5 of their papers we have counts for
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cond-mat.str-el2015
Electronic correlations in the Hubbard model on a bi-partite lattice
Wissam A. Ameen, Niels R. Walet, Yang Xian
In this work we study the Hubbard model on a bi-partite lattice using the coupled-cluster method (CCM). We first investigate what, within this approach, allows us to reproduce the…
cond-mat.str-el2012★ 4 cited
Longitudinal excitations in triangular lattice antiferromagnets
Mohammad Merdan, Y. Xian
We study the longitudinal excitations of quantum antiferromagnets on a triangular lattice by a recently proposed microscopic many-body approach based on magnon-density waves. We ca…
cond-mat.str-el2002★ 6 cited
An extension of the coupled-cluster method: A variational formalism
Y. Xian
A general quantum many-body theory in configuration space is developed by extending the traditional coupled cluter method (CCM) to a variational formalism. Two independent sets of…