Speaker
Tokuro Fukui
(Kyushu University)
Description
We clarify the relationship between spin–orbit (SO) splitting and three-nucleon forces (3NFs) derived from chiral effective field theory. While the influence of 3NFs on enhancing SO splitting is well known, the mechanisms underlying this enhancement have remained elusive. Through the irreducible tensor decomposition of the chiral 3NF, our investigation reveals that the rank-1 tensor component of the 3NF contributes primarily to the SO splitting in light nuclei as well as medium-heavy nuclei.
We also discuss the antisymmetric nature of the rank-1 3NF, which is akin to the Dzyaloshinsky–Moriya interaction causing the spin canting in magnetic ions.
Author
Tokuro Fukui
(Kyushu University)