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HK: Fachverband Physik der Hadronen und Kerne
HK 20: Struktur und Dynamik von Kernen
HK 20.2: Vortrag
Montag, 4. März 2013, 17:15–17:30, HSZ-401
Ab-initio description of p-shell hypernuclei — •Roland Wirth, Angelo Calci, Joachim Langhammer, and Robert Roth — Institut für Kernphysik, Technische Universität Darmstadt
Tremendous progress is being made on the experimental study of hypernuclei, especially on the spectroscopy of p-shell hypernuclei. Their theoretical description, however, is limited to phenomenological models or very light (i.e. s-shell) systems. We present the first ab-initio calculations of p-shell hypernuclei using chiral Hamiltonians including hyperon-nucleon and two- plus three-nucleon interactions, which to date constitute the most consistent starting-point to solving the hypernuclear many-body problem.
The many-body calculations are performed in the framework of the importance-truncated no-core shell model using leading-order (LO) chiral hyperon-nucleon and chiral two- plus three-body nucleon-nucleon interactions at N3LO and N2LO, respectively. To improve convergence with respect to model space size, the interactions are evolved consistently using a similarity renormalization group transformation. We show absolute energies and spectra for selected single-lambda-hypernuclei up to the ΛLi isotope chain.
* Supported by DFG (SFB 634), HIC for FAIR and BMBF (06DA7047I)