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Wigner crystal versus fermionization for one-dimensional Hubbard models with and without long-range interactions

Wigner crystal versus fermionization for one-dimensional Hubbard models with and without long-range interactions

The ground state properties of Hubbard model with or without long-range interactions in the regime with strongly repulsive on-site interaction are investigated by means of the exact diagonalization method.We show that the appearance of N -crests in the density profile of a trapped N-fermion system is a natural result of …