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Title:
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Correlation density matrix : an unbiased analysis of exact diagonalizations.
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Author:
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Cheong, Siew Ann.; Henley, Christopher L.
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Copyright year:
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2009 |
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Abstract:
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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. |
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Subject:
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DRNTU::Science::Physics::Atomic physics::Solid state physics. |
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Type:
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Journal Article |
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Series/ Journal Title:
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Physical review B |
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School:
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School of Physical and Mathematical Sciences |
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Rights:
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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. |
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Version:
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Published version |
