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On the Dirac structure of the nucleon self-energy in nuclear matter |
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| Authors: | A Trasobares A Polls A Ramos H Müther |
| Institution: | a Departament d'Estructura i Constituents de la Matèria Universitat de Barcelona, E-08028, Barcelona, Spain b Institut für Theoretische Physik, Universität Tübingen, D-72076, Tübingen, Germany |
| Abstract: | The relativistic structure of the self-energy of a nucleon in nuclear matter is investigated including the imaginary and real components which arise from the terms of first and second order in the NN interaction. A parameterized form of the Brueckner G-matrix is used for the NN interaction. The effects of the terms beyond the DBHF approximation on quasiparticle energies and the optical potential for nucleon-nucleus scattering are discussed. |
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