Adiabatic connection between the RVB State and the ground state of the half filled periodic Anderson model
arXiv:cond-mat/9706203 · doi:10.1088/0953-8984/9/47/005
Abstract
A one-parameter family of models that interpolates between the periodic Anderson model with infinite repulsion at half-filling and a model whose ground state is exactly the Resonating-Valence-Bond state is studied. It is shown numerically that the excitation gap does not collapse. Therefore the ground states of the two models are adiabatically connected.
6 pages, 3 figures Revtex