Extrapolation Method for the No-Core Shell Model

Details Extrapolation Method for the No-Core Shell Model Extrapolation Method for the No-Core Shell Model

2004-01-21

arxiv.org/abs/nucl-th/0401047v1

Phys.Rev. C69 (2004) 034302

Physics

Nuclear Physics

Nuclear Theory

8 pages, 7 figures, PRC accepted

Scientific paper

10.1103/PhysRevC.69.034302

Nuclear many-body calculations are computationally demanding. An estimate of their accuracy is often hampered by the limited amount of computational resources even on present-day supercomputers. We provide an extrapolation method based on perturbation theory, so that the binding energy of a large basis-space calculation can be estimated without diagonalizing the Hamiltonian in this space. The extrapolation method is tested for 3H and 6Li nuclei. It will extend our computational abilities significantly and allow for reliable error estimates.

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