Details

Autor(en) / Beteiligte

• Natowitz, J B
• Röpke, G
• Typel, S
• Blaschke, D
• Bonasera, A
• Hagel, K
• Klähn, T
• Kowalski, S
• Qin, L
• Shlomo, S
• Wada, R
• Wolter, H H

Titel

Symmetry energy of dilute warm nuclear matter

Ist Teil von

• Physical review letters, 2010-05, Vol.104 (20), p.202501-202501, Article 202501

Ort / Verlag

United States

Erscheinungsjahr

2010

Link zum Volltext

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• The symmetry energy of nuclear matter is a fundamental ingredient in the investigation of exotic nuclei, heavy-ion collisions, and astrophysical phenomena. New data from heavy-ion collisions can be used to extract the free symmetry energy and the internal symmetry energy at subsaturation densities and temperatures below 10 MeV. Conventional theoretical calculations of the symmetry energy based on mean-field approaches fail to give the correct low-temperature, low-density limit that is governed by correlations, in particular, by the appearance of bound states. A recently developed quantum-statistical approach that takes the formation of clusters into account predicts symmetry energies that are in very good agreement with the experimental data. A consistent description of the symmetry energy is given that joins the correct low-density limit with quasiparticle approaches valid near the saturation density.