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cond-mat.str-el2012★ 48 cited
Symmetry-projected variational approach for ground and excited states of the two-dimensional Hubbard model
R. Rodríguez-Guzmán, K. W. Schmid, Carlos A. Jiménez-Hoyos +1
We present a symmetry-projected configuration mixing scheme to describe ground and excited states, with well defined quantum numbers, of the two-dimensional Hubbard model with near…
cond-mat.str-el2004★ 19 cited
A symmetry-projected variational approach to the 1-dimensional Hubbard-model
K. W. Schmid, T. Dahm, J. Margueron +1
We apply a variational method devised for the nuclear many--body problem to the 1-dimensional Hubbard--model with nearest neighbor hopping and periodic boundary conditions. The tes…