Strangeness & Hypernuclei
Baryon-baryon interaction are important for the understanding neutron stars and reveal the impact of strangeness in nuclear physics. Hypernuclei are an important source of information on their properties.
We study the baryon-baryon interaction and baryonic few-body systems involving strange baryons (Lambda, Sigma, Xi). The employed framework, chiral effective field theory, incorporates the essential symmetries of quantum chromodynamics, the underlying fundamental theory of strong interaction. The interaction of strange baryons with ordinary nuclear matter is important for various aspects of nuclear physics. First, it provides a unique window for exploring the effects of explicit chiral symmetry breaking and of SU(3) flavor symmetry, both connected with the strange quark mass, on nuclear forces. Furthermore, the properties of these interactions play a significant role for our understanding of neutron stars. Their strength at densities around and above nuclear matter saturation density has an impact on the composition and stability of neutron stars and strongly influences the mass and size of those objects.
The study of hypernuclei is essential for providing additional constraints on the properties of these interactions. We employ several methods, including the Jacobi No-Core Shell Model, to relate the interactions to such hypernuclei.
Um die Eigenschaften der Wechselwirkungen besser festlegen zu können, sind Vorhersagen für Hyperkerne, bei denen ein Proton oder Neutron durch ein Hyperon ausgetauscht wird, der Schlüssel. Wir verwenden verschiedene numerische Methoden, einschließlich des "Jacobi No-Core Shell Models", um die Wechselwirkung in Zusammenhang mit den Eigenschaften der Hyperkerne zu bringen.
Contact
Dr. Andreas Nogga
IAS-4/IKP-3 Mitarbeiter
- Institute for Advanced Simulation (IAS)
- Theory of the Strong Interactions (IAS-4 / IKP-3)
Room 251