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arXiv · 1109.4837

Energy Dependent Isospin Asymmetry in Mean-Field Dynamics

T. Gaitanos·M. Kaskulov
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Abstract

The Lagrangian density of relativistic mean-field (RMF) theory with non-linear derivative (NLD) interactions is applied to isospin asymmetric nuclear matter. We study the symmetry energy and the density and energy dependences of nucleon selfenergies. At high baryon densities a soft symmetry energy is obtained. The energy dependence of the isovector selfenergy suppresses the Lane-type optical potential with increasing energy and predicts a $ρ$-meson induced mass splitting between protons and neutrons in isospin asymmetric matter.

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T. Gaitanos, M. Kaskulov. 2012-01-27. Energy Dependent Isospin Asymmetry in Mean-Field Dynamics. https://doi.org/10.1016/j.nuclphysa.2012.01.013

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