Density Matrix Renormalization Group Approach for Many-Body Open Quantum Systems

Journal Article · Fri Sep 15 00:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.97.110603· OSTI ID:20860821

Rotureau, J; Michel, N ^[1]; Nazarewicz, W ^[1]; Ploszajczak, M ^[2]; Dukelsky, J ^[3]

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1. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States)
2. Grand Accelerateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, BP 55027, F-14076 Caen Cedex (France)
3. Instituto de Estructura de la Materia, CSIC, Serrano 123, 28006 Madrid (Spain)

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 in case of the unbound nucleus {sup 7}He. It is shown that the extended DMRG procedure provides a highly accurate treatment of the coupling to the nonresonant scattering continuum.

• OSTI ID: 20860821
• Journal Information: Physical Review Letters, Vol. 97, Issue 11; Other Information: DOI: 10.1103/PhysRevLett.97.110603; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CONFIGURATION INTERACTION
DENSITY MATRIX
HELIUM 7
MANY-BODY PROBLEM
RENORMALIZATION
SCATTERING
SHELL MODELS