Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10725796 | Physics Letters B | 2009 | 6 Pages |
Abstract
The problem of center-of-mass (CM) contaminations in ab initio nuclear structure calculations using configuration interaction (CI) and coupled-cluster (CC) approaches is analyzed. A rigorous and quantitative scheme for diagnosing the CM contamination of intrinsic observables is proposed and applied to ground-state calculations for 4He and 16O. The CI and CC calculations for 16O based on model spaces defined via a truncation of the single-particle basis lead to sizable CM contaminations, while the importance-truncated no-core shell model based on the NmaxâΩ space is virtually free of CM contaminations.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Robert Roth, Jeffrey R. Gour, Piotr Piecuch,