Gorkov-Green's function approach to open-shell systems
نویسنده
چکیده
INT Workshop Advances in many-body theory: from nuclei to molecules
منابع مشابه
Self-consistent Gorkov Green’s function calculations of one-nucleon spectral properties
Results from the newly developed Gorkov self-consistent Green's function approach are presented. Ab-initio spectral strength distributions for one-nucleon addition or removal calculated in doubly-closed shell 40 Ca and in semi-magic 44 Ca are briefly discussed. The object of the present communication is to illustrate the potential spectroscopic reach of the method. 1. Introduction In the last d...
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Advances in the self-consistent Green’s function approach to finite nuclei are discussed, including the implementation of three-nucleon forces and the extension to the Gorkov formalism. We report results on binding energies in the nitrogen and fluorine isotopic chains, as well as spectral functions of 22O. The application to mediummass open-shell systems is illustrated by separation energy spec...
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Ab-initio predictions of nuclei with masses up to A⇠100 or more are becoming possible thanks to novel advances in computations and in the formalism of many-body physics. Some of the most fundamental issues include how to deal with many-nucleon interactions, how to calculate degenerate—open shell—systems, and pursuing ab-initio approaches to reaction theory. Self-consistent Green’s function (SCG...
متن کاملAb initio Gorkov-Green’s function calculations of open-shell nuclei
V. Somà,1,2,* C. Barbieri,3,† and T. Duguet4,5,‡ 1Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany 2ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany 3Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom 4CEA–Saclay, IRFU/Service de Physique Nucléaire, F-91191 Gif-sur-Yvette, F...
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The first nuclear structure application of the newly developed Gorkov selfconsistent Green’s function method is presented. The approach aims to describe many-nucleon systems from an ab-initio standpoint featuring an explicit treatment of pairing correlations. In the present work calculations of binding energies of calcium isotopes are reported and compared with experimental data and other theor...
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