Dresden 2013 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 79: Nukleare Astrophysik
HK 79.2: Gruppenbericht
Donnerstag, 7. März 2013, 17:15–17:45, HSZ-403
Equation of state of stellar matter in an effective relativistic density functional approach — •Stefan Typel1, Maria Voskresenskaya1, Gerd Röpke2, Thomas Klähn3, David Blaschke3, and Hermann H. Wolter4 — 1GSI Darmstadt — 2Universität Rostock — 3Uniwersytet Wrocłaswki — 4LMU München
The simulation of astrophysical processes such as supernovae explosions and compact star formation requires realistic models for the equation of state of stellar matter in a wide range of density, temperature and isospin asymmetry. The properties of dense matter, in particular the chemical composition and phase transitions, are strongly affected by correlations. They can be considered partly by using quasi-particle concepts. Explicit correlations are treated in the model by introducing additional degrees of freedom with medium-dependent properties. In this contribution, the formation and dissolution of clusters, i.e. many-nucleon correlations, and the crystallization of matter due to long-range Coulomb correlations will be described in an effective way using a relativistic density functional approach taking into account various experimental constraints.