Eur. Phys. J. A (2022) 58: 25
https://doi.org/10.1140/epja/s10050-021-00648-9

Regular Article - Theoretical Physics

Microscopic calculations of He and Li with real-time evolution method

¹ School of Science, Huzhou University, 313000, Huzhou, Zhejiang, China
² Department of Physics, Hokkaido University, 060-0810, Sapporo, Japan
³ Institute of Modern Physics, Fudan University, 200433, Shanghai, China
⁴ Nuclear Reaction Data Centre (JCPRG), Hokkaido University, 060-0810, Sapporo, Japan
⁵ RIKEN Nishina Center, Wako, 351-0198, Saitama, Japan

^a zhaoqing91@zjhu.edu.cn

Received: 24 February 2021
Accepted: 29 November 2021
Published online: 10 February 2022

Abstract

The low-lying cluster states of He (+n+n) and Li (+n+p) are calculated by the real-time evolution method (REM) which generates basis wave functions for the generator coordinate method (GCM) from the equation of motion of Gaussian wave packets. The state of He as well as the , and states of Li are calculated as a benchmark. We also calculate the root-mean-square (r.m.s.) radii of the point matter, the point proton, and the point neutron of these states, particularly for the study of the halo characters of these two nuclei. It is shown that REM can be one constructive way for generating effective basis wave functions in GCM calculations.