Structure of Light Hypernuclei in the Framework of Fermionic Molecular Dynamics

Abstract

We performed variational calculations of the s-shell hypernuclei 4 Λ H, 4 Λ He and the p-shell hypernucleus 7 Λ Li within a recently developed Fermionic Molecular Dynamics code. The YNG potentials considered in this work give substantially different Λ separation energies. Comparison of the Λ spectra of the mirror hypernuclei 4 Λ H and 4 Λ He reveals very small and mostly opposite charge symmetry breaking effect in contrast to experimental data, which indicates that more sophisticated interactions are required. In 7 Λ Li, the Λ hyperon pulls the α and d clusters in the 6 Li closer together, which confirms the "glue-like" role of Λ.

Effect of a realistic three-body force on the spectra of medium-mass hypernuclei

“…Faddeev or Yakubovsky equations based on realistic baryon-baryon interactions have been used to study the A=3 and A=4 systems [1]. Ab initio calculations of spectra of light hypernuclei up to the p-shell have been performed within no-coreshell model [2,3] and fermionic molecular dynamics [4]. Medium-mass and heavy hypernuclei have been studied mostly within phenomenological models.…”