Charge-symmetry breaking in light hypernuclei based on chiral and similarity renormalization group-evolved interactions

Abstract

We present Λ separation energies for light hypernuclei based on chiral hyperon-nucleon interactions at leading and next-to-leading order. For the very light systems, the problem can be directly solved using Faddeev-Yakubovsky equations. For systems with A > 4, we employ the Jacobi no-core shell model. In this case, the hyperon-nucleon and nucleon-nucleon interactions are evolved using the similarity renormalization group (SRG). We discuss the SRG parameter dependence in some detail. The results are used to study the charge-symmetry breaking of A = 4 and 6 hypernuclei.