Formation of Selfbound States in a One-Dimensional Nuclear Model -- A Renormalization Group based Density Functional Study
Formation of Selfbound States in a One-Dimensional Nuclear Model -- A Renormalization Group based Density Functional Study
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一维核模型中自束缚态的形成——基于重正化群的密度泛函研究
DOI:
10.1088/0954-3899/44/1/015101
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
J. Brau
中科院分区:
文献类型:
--
作者:
S. Kemler;M. Pospiech;J. Brau
In nuclear physics, density functional theory (DFT) provides the basis for state-of-the art studies of ground-state properties of heavy nuclei. However, the direct relation of the density functional underlying these calculations and the microscopic nuclear forces is not yet fully understood. We present a combination of DFT and renormalization group (RG) techniques which allows to study selfbound many-body systems from microscopic interactions. We discuss its application with the aid of systems of identical fermions interacting via a long-range attractive and short-range repulsive two-body force in one dimension. We compute ground-state energies, intrinsic densities, and density correlation functions of these systems and compare our results to those obtained from other methods. In particular, we show how energies of excited states as well as the absolute square of the ground-state wave function can be extracted from the correlation functions within our approach. The relation between many-body perturbation theory and our DFT-RG approach is discussed and illustrated with the aid of the calculation of the second-order energy correction for a system of N identical fermions interacting via a general two-body interaction. Moreover, we discuss the control of spuriously emerging fermion self-interactions in DFT studies within our framework. In general, our approach may help to guide the development of energy functionals for future quantitative DFT studies of heavy nuclei from microscopic interactions.
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影响因子:
--
作者:
W. Kutzelnigg
通讯作者:
W. Kutzelnigg
影响因子:
8.6
作者:
I. Tews;T. Krüger;K. Hebeler;A. Schwenk
通讯作者:
I. Tews;T. Krüger;K. Hebeler;A. Schwenk
DOI:
10.1088/0954-3899/39/3/033001
发表时间:
2011-08
期刊:
Journal of Physics G
影响因子:
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通讯作者:
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DOI:
10.1103/physrevb.54.17402
发表时间:
1996
期刊:
Physical review. B, Condensed matter
影响因子:
--
作者:
Per;U. Barth
通讯作者:
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DOI:
10.1007/978-3-642-27320-9_3
发表时间:
2007
期刊:
Lecture Notes in Physics
影响因子:
--
作者:
R. Furnstahl
通讯作者:
R. Furnstahl