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HK: Physik der Hadronen und Kerne

HK 13: Poster-Sitzung: Theorie

HK 13.15: Poster

Dienstag, 18. März 2003, 13:30–15:30, Foyer

Nuclear Many-Body Dynamics constrained by QCD and Chiral Symmetry — •Norbert Kaiser¹, Paolo Finelli², Dario Vretenar³ und Wolfram Weise^1,4 — ¹Physik Department T39, Technische Universität München, D-85747 Garching — ²Physics Department, University of Bologna, and INFN-Bologna, I-40125 Bologna — ³Physics Department, University of Zagreb, Croatia — ⁴ECT^*, Villa Tambosi, I-Villazzano (Trento)

We present a novel description of nuclear many-body systems, both for nuclear matter and finite nuclei, emphasizing the connection with the condensate structure of the QCD ground state and spontaneous chiral symmetry breaking. Lorentz scalar and vector mean fields are introduced in accordance with QCD sum rules. Nuclear binding arises from pionic fluctuations, calculated using in-medium chiral perturbation theory up to three-loop order. Ground state properties of ¹⁶O and ⁴⁰Ca are calculated. The built-in QCD constraints reduce the number of input parameters significantly in comparison with purely phenomenological relativistic mean-field approaches.

[1] preprint: nucl-th/0205016. Work supported in part by BMBF, DFG and GSI.