Ground state properties of the 2D disordered Hubbard model

Details Ground state properties of the 2D disordered Hubbard model Ground state properties of the 2D disordered Hubbard model

2000-04-06

arxiv.org/abs/cond-mat/0004092v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

7 pages, 9 figures

Scientific paper

10.1103/PhysRevB.62.10680

We study the ground state of the two-dimensional (2D) disordered Hubbard model by means of the projector quantum Monte Carlo (PQMC) method. This approach allows us to investigate the ground state properties of this model for lattice sizes up to $10 \times 10$, at quarter filling, for a broad range of interaction and disorder strengths. Our results show that the ground state of this system of spin-1/2 fermions remains localised in the presence of the short-ranged Hubbard interaction.

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