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arXiv · 0709.0449

Comment on "Ab Initio study of 40-Ca with an importance-truncated no-core shell model"

D. J. Dean·G. Hagen·M. Hjorth-Jensen·T. Papenbrock·A. Schwenk
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Abstract

In a recent Letter [Phys. Rev. Lett. 99, 092501 (2007)], Roth and Navratil present an importance-truncation scheme for the no-core shell model. The authors claim that their truncation scheme leads to converged results for the ground state of 40-Ca. We believe that this conclusion cannot be drawn from the results presented in the Letter. Furthermore, the claimed convergence is at variance with expectations of many-body theory. In particular, coupled-cluster calculations indicate that a significant fraction of the correlation energy is missing.

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D. J. Dean, G. Hagen, M. Hjorth-Jensen, T. Papenbrock, A. Schwenk. 2007-09-04. Comment on "Ab Initio study of 40-Ca with an importance-truncated no-core shell model". https://doi.org/10.1103/physrevlett.101.119201

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