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Extended RPA with ground-state correlations

M. Tohyama·S. Takahara·P. Schuck
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Abstract

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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M. Tohyama, S. Takahara, P. Schuck. 2003-11-06. Extended RPA with ground-state correlations. https://doi.org/10.1140/epja%2Fi2003-10199-6

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