Real-space renormalization group study of the Hubbard model on a non-bipartite lattice
Wang, J. X. · Kais, Sabre · Levine, R. D.
Original · EN
We present the real-space block renormalization group equations for fermion systems described by a Hubbard Hamiltonian on a triangular lattice with hexagonal blocks. The conditions that keep the equations from proliferation of the couplings are derived. Computational results are presented including the occurrence of a first-order metal-insulator transition at the critical value of U/t ≈ 12.5.
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