The Imaginary Part of Nucleon Self-energy in hot nuclear matter

Details The Imaginary Part of Nucleon Self-energy in hot nuclear matter The Imaginary Part of Nucleon Self-energy in hot nuclear matter

1996-10-02

arxiv.org/abs/nucl-th/9610003v1

Nucl.Phys. A606 (1996) 407-420

Physics

Nuclear Physics

Nuclear Theory

15 pages, 6 postscripts figures, to be published in Nucl. Phys. A

Scientific paper

10.1016/0375-9474(96)00179-0

A semiphenomenological approach to the nucleon self-energy in nuclear matter at finite temperatures is followed. It combines elements of Thermo Field Dynamics for the treatment of finite temperature with a model for the self-energy, which evaluates the second order diagrams taking the needed dynamics of the NN interaction from experiment. The approach proved to be accurate at zero temperature to reproduce Im(Sigma) and other properties of nucleons in matter. In the present case we apply it to determine Im(Sigma) at finite temperatures. An effective NN cross section is deduced which can be easily used in analyses of heavy ion reactions.

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