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Density dependence of meson - nucleon vertices in nuclear matter

A. M. Rakhimov·F. C. Khanna·U. T. Yakhshiev·M. M. Musakhanov
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Abstract

Changes in the meson-nucleon coupling constant and the vertex form factor in nuclear matter are studied in a modified Skyrme Lagrangian including the sigma-meson field that satisfies the scale invariance. Renormalization of the axial-vector coupling constant, and the nucleon mass are studied in a consistent model. The results are consistent with the empirical evidence. A calculation of pi N commutator, sigma-term, indicates that the medium changes its magnitude considerably.

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A. M. Rakhimov, F. C. Khanna, U. T. Yakhshiev, M. M. Musakhanov. 1998-10-15. Density dependence of meson - nucleon vertices in nuclear matter. https://doi.org/10.1016/s0375-9474(98)00561-2

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