Convergence in the no-core shell model with low-momentum two-nucleon interactions

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dc.creatorBogner, S. K.
dc.creatorFurnstahl, R. J.
dc.creatorMaris, P.
dc.creatorPerry, R. J.
dc.creatorSchwenk, A.
dc.creatorVary, J. P.
dc.date2007-08-28
dc.date2007-11-30
dc.date.accessioned2026-07-07T11:18:55Z
dc.date.available2026-07-07T11:18:55Z
dc.descriptionThe convergence of no-core shell model (NCSM) calculations using renormalization group evolved low-momentum two-nucleon interactions is studied for light nuclei up to Li-7. Because no additional transformation was used in applying the NCSM framework, the energy calculations satisfy the variational principle for a given Hamiltonian. Dramatic improvements in convergence are found as the cutoffs are lowered. The renormalization group equations are truncated at two-body interactions, so the evolution is only approximately unitary and converged energies for A > 2 vary with the cutoff. This approximation is systematic, however, and for useful cutoff ranges the energy variation is comparable to natural-size truncation errors inherent from the initial chiral effective field theory potential.
dc.description27 pages, 24 figures, improved discussion on running of energies
dc.identifierhttps://arxiv.org/abs/0708.3754
dc.identifierhttp://arxiv.org/abs/0708.3754
dc.identifierNucl.Phys.A801:21-42,2008
dc.identifierdoi:10.1016/j.nuclphysa.2007.12.008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193509
dc.subjectNuclear Theory
dc.titleConvergence in the no-core shell model with low-momentum two-nucleon interactions
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