Adiabatic connection between the RVB State and the ground state of the half filled periodic Anderson model
K. Kimura, Y. Hatsugai, M. Kohmoto
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.
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