Speaker
Martin Schäfer
(Nuclear Physics Institute, 250 68 Rez, Czech Republic)
Description
The structure of light hypernuclei is an object of considerable interest as it's study provides important information
about the form and properties of the Y-N interaction. Moreover, modifications of the nuclear core including possible formation
of clusters inside light hypernuclei could bring deeper insight in the situation when the amount of experimental
scattering data describing Y-N interaction is very limited.
In this work, we explore ground and excited states of light Lambda-hypernuclei. We calculate binding energies, Lambda
separation energies and one-body densities of the s-shell hypernuclei. The attention is mainly paid to the effect
of the presence of hyperon on the nuclear structure. In our approach we use Fermionic Molecular Dynamics approach as an
efficient tool to describe cluster phenomena inside light nuclear systems. We perform time-independent variational
calculations minimizing the binding energy of a particular hypernucleus. The proper antisymmetrization of the many-body
wave function is ensured by the use of Slater determinants. The single particle states are represented by Gaussians
wave packets followed by spin and isospin part. This provides us with a sufficiently flexible basis during
the minimization. Results of our calculations including model dependence will be discussed.
Primary authors
Jiri Mares
(Nuclear Physics Institute, 250 68 Rez, Czech Republic)
Martin Schäfer
(Nuclear Physics Institute, 250 68 Rez, Czech Republic)
Co-authors
Hans Feldmeier
(GSI Theory, Planckstrasse 1, 64291 Darmstadt, Germany)
Thomas Neff
(GSI Theory, Planckstrasse 1, 64291 Darmstadt, Germany)
