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Density matrix renormalization group approach for many-body open quantum systems

J. Rotureau·N. Michel·W. Nazarewicz·M. Ploszajczak·J. Dukelsky
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Abstract

The density matrix renormalization group (DMRG) approach is extended to complex-symmetric density matrices characteristic of many-body open quantum systems. Within the continuum shell model, we investigate the interplay between many-body configuration interaction and coupling to open channels. It is shown that the DMRG technique applied to broad resonances in the unbound neutron-rich nucleus 7He provides a highly accurate treatment of the coupling to the non-resonant scattering continuum.

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J. Rotureau, N. Michel, W. Nazarewicz, M. Ploszajczak, J. Dukelsky. 2006-03-07. Density matrix renormalization group approach for many-body open quantum systems. https://doi.org/10.1103/physrevlett.97.110603

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