Particle-number projection and the density functional theory

被引：133

作者：

Dobaczewski, J. ^{[1
]}

Stoitsov, M. V.

Nazarewicz, W.

Reinhard, P. -G.

机构：

[1] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[2] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA

[3] Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA

[4] Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland

[5] Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland

[6] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, BU-1784 Sofia, Bulgaria

[7] Univ Erlangen Nurnberg, Inst Theoret Phys, D-91058 Erlangen, Germany

来源：

PHYSICAL REVIEW C | 2007年 / 76卷 / 05期

关键词：

D O I：

10.1103/PhysRevC.76.054315

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

In the framework of the density functional theory for superconductors, we study the restoration of the particle-number symmetry by means of the projection technique. Conceptual problems are outlined and numerical difficulties are discussed. Both are related to the fact that neither the many-body Hamiltonian nor the wave function of the system appear explicitly in the density functional theory. Similar obstacles are encountered in self-consistent theories utilizing density-dependent effective interactions.

引用

页数：16

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