کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10725796 1034218 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Center-of-mass problem in truncated configuration interaction and coupled-cluster calculations
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Center-of-mass problem in truncated configuration interaction and coupled-cluster calculations
چکیده انگلیسی
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 NmaxℏΩ space is virtually free of CM contaminations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 679, Issue 4, 31 August 2009, Pages 334-339
نویسندگان
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