Calculation of the $^{6}\mathrm{Li}$ ground state within the hyperspherical harmonic basis

Calculation of the ${}^{6}{Li}$ ground state within the hyperspherical harmonic basis

A. Gnech, M. Viviani, and L. E. Marcucci

Phys. Rev. C 102, 014001 – Published 2 July 2020

Abstract

We have studied the solution of the six-nucleon bound state problem using the hyperspherical harmonic (HH) approach. For this study we have considered only two-body nuclear forces. In particular we have used a chiral nuclear potential evolved with the similarity renormalization group unitary transformation. A restricted basis has been selected by performing a careful analysis of the convergence of different HH classes. Finally, the binding energy and other properties of ${}^{6}{Li}$ ground state are calculated and compared with the results obtained by other techniques. Then, we present a calculation of matrix elements relevant for direct dark matter search involving ${}^{6}{Li}$ . The results obtained demonstrate the feasibility of using the HH method to perform calculations beyond $A = 4$ .