Entanglement in fermionic systems at a quantum phase transition
Henrik Johannesson, D. Larsson
We consider recent results on the use of the single-site entanglement measure for identifying and characterizing a quantum phase transition in systems of interacting fermions. We discuss the extension of these results to fermionic models where the single-site entanglement may fail to signal a quantum phase transition, with particular attention given to the one-dimensional extended UV Hubbard model.
Low Temperature Physics•Nov 1, 2007•8 citations