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Author Van Neck, D. ♦ Dieperink, A. E. ♦ Waroquier, M.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ ORBITS ♦ MANY-BODY PROBLEM ♦ MEAN-FIELD THEORY ♦ SPECTROSCOPIC FACTORS ♦ EIGENSTATES ♦ DENSITY MATRIX ♦ GROUND STATES ♦ BOUND STATE
Abstract We consider a simple but nontrivial many-body system interacting through short-range forces, and confirm a property of such systems that was recently proposed on general grounds, namely, that single-particle overlap functions, spectroscopic factors, and separation energies of the bound ({ital A}{minus}1)-particle eigenstates can be derived from the one-body density matrix of the {ital A}-particle system in its ground state. The basis of natural orbitals for the system is constructed and its properties are discussed. We also investigate the high-momentum content of the bound-state overlap functions and momentum distribution. It is found that the mean field provides a good approximation for the bound-state overlap functions even in the region of large momenta, where the total momentum distribution is already enhanced by several orders of magnitude over the mean-field result. {copyright} {ital 1996 The American Physical Society.}
ISSN 05562813
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-05-01
Publisher Place United States
Journal Physical Review, C
Volume Number 53
Issue Number 5


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