Momentum and density dependence of the ph interaction in continuum RPA calculations with Skyrme forces |
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Institution: | 1. Department of Finance, Florida Atlantic University, Boca Raton, FL 33431, USA;2. Department of Economics and Finance, Creighton University, Omaha, NE 68178, USA;3. Department of Finance, Iowa State University, Ames, IA 50011, USA |
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Abstract: | We analyse the momentum and density dependence of the ph interaction in self-consistent RPA calculations of electromagnetic reactions with Skyrme forces. First, we calculate the V00ph and V01ph spin-isospin components in nuclear matter for an SK3 interaction. At the nuclear surface, they have decreasing values with increasing q-values up to momenta q=3 fm−1. As a second point, we show that the predictions of the 12C(e, e') charge response at 400 MeV/c remain practically unchanged when the zero-range quadratic momentum dependence of the SK3 interaction is replaced by the momentum dependence associated with a Yukawa short-ranged force. |
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