Exact results for the one-dimensional periodic Anderson model at finite U

摘要

We present exact results for the periodic Anderson model for finite Hubbard interaction 0 < U < infinity on certain restricted domains of the model's phase diagram, in d = 1 dimension. Decomposing the Hamiltonian into positive semidefinite terms we find two quantum states to be ground states; a completely localized ground state and a non-localized ground state. The ground-state energy and several ground-state expectation values were calculated. [References: 5]