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Weak entanglement approximation for nuclear structure
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DOI：10.1103/PhysRevC.110.034305.png)
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摘要
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The interacting shell model, a configuration-interaction method, is a venerable approach for low-lying nuclear structure calculations, but it is hampered by the exponential growth of its basis dimension as one increases the single-particle space and/or the number of active particles. Recent, quantum-information-inspired work has demonstrated that the proton and neutron sectors of a nuclear wave function are weakly entangled. Furthermore, the entanglement is smaller for nuclides away from N = Z, such as heavy, neutron-rich nuclides. Here we implement a weak entanglement approximation to bipartite configuration-interaction wave functions, approximating low-lying levels by coupling a relatively small number of many-proton and many-neutron states. This truncation scheme, which we present in the context of past approaches, reduces the basis dimension by many orders of magnitude while preserving essential features of nuclear spectra.
Keyword:
MATRIX RENORMALIZATION-GROUP
SHELL-MODEL
DATA SHEETS
FACTORIZATION
TRUNCATION
期刊
IF:
3.4
论文数:
2.9W
被引数:
5.7W
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引用论文
Spectroscopy of N=50 isotones with the valence-space density matrix renormalization group.png)
PHYSICS LETTERS B
OAAI
PHYSICS LETTERS BIF4.5
OAAI分享收藏Solution of large scale nuclear structure problems by wave function factorizationPHYSICAL REVIEW C
OAAI
PHYSICAL REVIEW CIF3.4
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