The validity of the density-matrix expansion (DME) is investigated using two different interactions: the Brink and Boecker (1967) B1 force and the Campi-Sprung (see Nucl. Phys., vol.194A, p.401 of 1972) G-O force. Simple parametrizations of the Hamiltonian density are discussed and the connection between the DME and Skyrme-like force is examined.
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Treiner et al. (1976) studied this question.
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