Temperature-dependent imaginary part of the off-shell nucleon self-energy and the second order correction of real part of the nucleon self-energy

摘要

The imaginary part of the off-shell nucleon self-energy at finite temperature in nu- clear matter, where the polarization and correlation contributions of exchanges of the meson are taken into account, is investigated based on Walecka's meson-nucleon model and thermo- field dynamics. The second order correction of temperature-dependent real part of the nucleon self-energy is calculated in terms of the dispersion relation. The Schrodinger equivalent poten- tial of relativistic microscopic optical potential of a nucleon at finite temperature in nuclear medium is also studied.