Description: Density matrix functional theory that includes pairing correlations

This title appears in the Scientific Report : 2006

Density matrix functional theory that includes pairing correlations

The extension of density functional theory (DFT) to include pairing correlations without formal violation of the particle-number conservation condition is described. This version of the theory can be considered as a foundation of the application of existing DFT plus pairing approaches to atoms, mole...

Personal Name(s):	Krewald, S.
	Soubbotin, V. B. / Tselyaev, V. I. / Vinas, X.
Contributing Institute:	Institut 3 (Theoretische Kernphysik); IKP-TH
Published in:	Physical Review C Physical review / C, 74 74 (2006 2006) 6 6, S. 064310 064310
Imprint:	Woodbury, NY Inst. 2006 2006-12-13 2006-12-01
Physical Description:	064310
DOI:	10.1103/PhysRevC.74.064310
Document Type:	Journal Article
Research Program:	Physik der Hadronen und Kerne
Series Title:	Physical Review C 74
Subject (ZB):	J
Link:	Get full text OpenAccess OpenAccess
	Publikationsportal JuSER

Please use the identifier: http://hdl.handle.net/2128/11107 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevC.74.064310 in citations.

The extension of density functional theory (DFT) to include pairing correlations without formal violation of the particle-number conservation condition is described. This version of the theory can be considered as a foundation of the application of existing DFT plus pairing approaches to atoms, molecules, ultracooled and magnetically trapped atomic Fermi gases, and atomic nuclei where the number of particles is conserved exactly. The connection with Hartree-Fock-Bogoliubov (HFB) theory is discussed, and the method of quasilocal reduction of the nonlocal theory is also described. This quasilocal reduction allows equations of motion to be obtained which are much simpler for numerical solution than the equations corresponding to the nonlocal case. Our theory is applied to the study of some even Sn isotopes, and the results are compared with those obtained in the standard HFB theory and with the experimental ones.