Many-body density matrices on a two-dimensional square lattice : noninteracting and strongly interacting spinless fermions

• Main Authors: Henley, Christopher L., Cheong, Siew Ann
• Format: Article
• Language: English
• Published: 2009
• Subjects: DRNTU::Science::Physics::Atomic physics::Solid state physics
• Online Access: https://hdl.handle.net/10356/90479; http://hdl.handle.net/10220/4602
• Institution: Nanyang Technological University

The reduced density matrix of an interacting system can be used as the basis for a truncation scheme, or in an unbiased method to discover the strongest kind of correlation in the ground state. In this paper, we investigate the structure of the many-body fermion density matrix of a small cluster in...