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HK: Fachverband Physik der Hadronen und Kerne

HK 20: Invited Talks 2

HK 20.3: Hauptvortrag

Dienstag, 24. März 2015, 12:20–13:00, T/HS1

Pygmy Dipole Resonances - Status and Perspectives — •Vera Derya — Institute for Nuclear Physics, University of Cologne

The so-called pygmy dipole resonance (PDR) appears as a concentration of E1 strength below the well-known isovector giant dipole resonance and was observed in medium-heavy and heavy neutron-rich nuclei [1]. Growing interest in the PDR is driven by its implications for fundamental questions concerning, e.g., the equation of state of nuclear matter under isospin asymmetric conditions as present in neutron stars, the origin and abundance of the elements in the universe, and isospin symmetry breaking. To approach a comprehensive understanding of the structure of the PDR throughout the nuclear landscape, different experimental techniques are applied using complementary probes on stable and unstable nuclei. An overview of recent results and future perspectives will be presented.

Supported by the DFG (ZI 510/4-2) and EURONS.

[1] D. Savran, T. Aumann, and A. Zilges, Prog. Part. Nucl. Phys. 70 (2013) 210.