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Correlation density matrix : an unbiased analysis of exact diagonalizations

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Correlation density matrix : an unbiased analysis of exact diagonalizations

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Title: Correlation density matrix : an unbiased analysis of exact diagonalizations
Author: Cheong, Siew Ann; Henley, Christopher L.
Copyright year: 2009
Abstract: Given the ground-state wave function for an interacting lattice model, we define a “correlation density matrix” (CDM) for two disjoint separated clusters A and B to be the density matrix of their union minus the direct product of their respective density matrices. The CDM can be decomposed systematically by a numerical singular-value decomposition to provide a systematic and unbiased way to identify the operator(s) dominating the correlations, even unexpected ones.
Subject: DRNTU::Science::Physics::Atomic physics::Solid state physics
Type: Journal Article
Series/ Journal Title: Physical review B
School: School of Physical and Mathematical Sciences
Rights: Physical Review B © copyright 2009 The American Physical Society. The journal's website is located at http://link.aps.org/doi/10.1103/PhysRevB.79.212402.
Version: Published version

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