  In this work, we present new ab initio coupled-cluster calculations of
dipole-excited state properties of 8He based on the chiral effective field
theory interaction 1.8/2.0 (EM). We focus on the dipole polarizability, and
compare the results to our previous study [Phys. Rev. C 105, 034313 (2022)] and
subsequent theoretical work. With the aim of connecting the presence of
low-lying dipole strength to structure properties of 8He, we compute the
point-neutron radius, finding excellent agreement with available experimental
data, and investigate its correlation with the dipole polarizability.
