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Bochum 2009 – wissenschaftliches Programm

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HK: Fachverband Hadronen und Kerne

HK 7: Nuclear Structure and Dynamics II

HK 7.1: Eingeladener Gruppenbericht

Montag, 16. März 2009, 14:00–14:30, H-ZO 50

Applications of in-medium chiral dynamics — •Paolo Finelli1, Norbert Kaiser2, Dario Vretenar3, and Wolfram Weise21Physics Department, University of Bologna and INFN (Italy) — 2Physik Department, Technische Universität München — 3Physics Department, University of Zagreb (Croatia)

A relativistic nuclear energy density functional is developed, guided by two important features that establish connections with chiral dynamics and the symmetry breaking pattern of low-energy QCD:

a) strong scalar and vector fields related to in-medium changes of QCD vacuum condensates;

b) long- and intermediate-range interactions generated by one-and two-pion exchange, derived from in-medium chiral perturbation theory, with explicit inclusion of Δ(1232) excitations.

Applications are presented for the the description of ground-state properties and collective excitations of medium and heavy nuclei.

The extension to hypernuclei will also be presented, showing a new interpretation of the Λ-nucleus spin-orbit potential.

Work supported by MIUR and INFN (Italy) and BMBF, GSI and DFG Cluster of Excellence "Origin and Structure of the Universe" (Germany).

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