New relativistic energy density functional with tensor couplings for nuclei and compact stars

by Dr Stefan Typel (Technical University of Darmstadt)

Tuesday 18 Aug 2026, 09:30 → 11:00 Asia/Shanghai

5#/6th-603 - Meeting Room 603 (Science Building)

Abstract:

Energy density functionals (EDFs) have been used extensively with great success to calculate properties of nuclei and to predict the equation of state (EOS) of dense nuclear matter. Besides nonrelativistic EDFs, mostly of the Skyrme type, relativistic EDFs of different types are in widespread use. In these latter approaches, the effective in-medium interaction is described by an exchange of mesons between nucleons. In most cases, only minimal meson-nucleon couplings are considered. The effects of additional tensor couplings were rarely investigated. In this talk, a new relativistic EDF with tensor couplings and density dependent minimal meson-nucleon couplings will be presented. The parameters of the model are determined using a carefully selected set of experimental data with realistic uncertainties that are determined self-consistently. Predictions for various nuclear observables and properties of compact stars will be discussed.

Biography:

Stefan Typel is a senior research scientist and head of the IT group at the Institute for Nuclear Physics, Technical University of Darmstadt (Germany). He received his Ph.D. from Münster University in 1994, after which he held postdoctoral positions at Université Libre des Bruxelles (Belgium) as Marie Curie Research Fellow; Ludwigs-Maximilians University, Munich (Germany); NSCL, Michigan State University, East Lansing (MI, USA); GSI, Darmstadt (Germany); GANIL, Caen (France); Excellence Cluster Universe, Technical University, Munich (Germany); Helmholtz International Center for FAIR, Darmstadt (Germany); and Nuclear Astrophysics Virtual Institute, GSI, Darmstadt (Germany). Since 2016 he works as theoretical physicist at the Institute for Nuclear Physics, TU Darmstadt (Germany) and he is member of the Collaborative Research Center (SFB) 1245.

Stefan Typel's work focuses on the theory of direct reactions, e.g., nucleon and cluster knockout reactions and indirect methods for nuclear astrophysics (Coulomb dissociation, Trojan-horse method), and on relativistic energy density functionals for nuclei and nuclear matter, in particular the equation of state with correlations and clusters for neutron stars and simulations of core-collapse supernovae. To date he has published more than 110 research papers in journals including Science, Nature Astronomy, Physical Review Letters, and Reviews of Modern Physics. 

Host: Prof. Liewen Chen

Alternative online link: https://meeting.tencent.com/dm/qawDDihQszkN

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