Extended RPA with ground-state correlations

Details Extended RPA with ground-state correlations Extended RPA with ground-state correlations

2003-11-06

arxiv.org/abs/nucl-th/0311016v1

Eur.Phys.J. A21 (2004) 217-225

Physics

Nuclear Physics

Nuclear Theory

12 pages, 9 figures

Scientific paper

10.1140/epja/i2003-10199-6

We propose a time-independent method for finding a correlated ground state of an extended time-dependent Hartree-Fock theory, known as the time-dependent density-matrix theory (TDDM). The correlated ground state is used to formulate the small amplitude limit of TDDM (STDDM) which is a version of extended RPA theories with ground-state correlations. To demonstrate the feasibility of the method, we calculate the ground state of 22O and study the first 2+ state and its two-phonon states using STDDM.

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