München 2019 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 37: Structure and Dynamics of Nuclei VII
HK 37.5: Vortrag
Mittwoch, 20. März 2019, 15:15–15:30, HS 16
Derivation of a density-dependent in-medium NN interaction from subleading chiral three-nucleon forces — •Bhawani Singh and Norbert Kaiser — Technische Universität München
We derive from the subleading contributions from the chiral three-nucleon force (in particular the long-range terms) a density-dependent two-nucleon interaction Vmed in isospin-symmetric nuclear matter. The contributions to Vmed are derived from the topologies of 3N-diagrams (1π 1π-exchange, 1π 2π-exchange, the ring diagrams) by joining an out-going nucleon line to another in-going nucleon line or by closing a nucleon line to a loop independent with the implementation of the medium insertion.
The momentum and kf-dependent potentials associated with the isospin operators ( 1, τ1→·τ2→) and five spin structures are expressed in terms of loop functions which are either given in closed analytical from or require at most one numerical integration.
Our results for Vmed are most helpful to implement subleading chiral 3N forces into nuclear many-body calculations.
Work supported in part by DFG, NSFC (CRC110) and The Tata Trusts.