Abstract
A comprehensive correlated basis theory for calculating the response functions of nuclear matter from realistic nuclear interactions is presented. It is used to calculate the dynamic structure function of nuclear matter in an approximation in which only correlated 1p–1h excited states are retained. The effect of 2p–2h excitations are approximately included via real and imaginary parts of the optical potential. It is argued that at large values of k the longitudinal response function R L( k, ω), observed in electron scattering experiments, can be obtained from the dynamic structure function. The calculated R L ( k, ω) at k = 300 and 400 MeV/ c is in fair agreement with the data on 40Ca, 48Ca and 238U nuclei. At k = 550 MeV/ c, the calculated response is in agreement with experiments on 40Ca and 56Fe at small values of ω, while it is larger than experiment at large ω.
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