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

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.

4 pages, 3 figures

References in corpus (1)

• Density matrix renormalization group and wave function factorization for nuclei

Cited by in corpus (11)

• Shell Model in the Complex Energy Plane
• Shell Structure of Exotic Nuclei
• Complex coupled-cluster approach to an ab-initio description of open quantum systems
• Resonances of 7He in the complex scaling method
• Density matrix renormalization group approach to two-fluid open many-fermion systems
• Continuum Coupling and Single-Nucleon Overlap Integrals
• Gamow shell-model calculations of drip-line oxygen isotopes
• Density Matrix Renormalization Group study of ${}^{48}$Cr and ${}^{56}$Ni
• Antibound States and Halo Formation in the Gamow Shell Model
• Complex energy approaches for calculating isobaric analogue states
• The resonance amplitude associated with the Gamow states