Fig. 10.The static electric dipole longitudinal polarizabilityazz andazz;diff for the HCl molecule embedded in (a) harmonic confining potential (b) helium nanotubes (c) carbon
nanotubes. Theazz of the isolated HCl molecule is equal to 13.02 au. The value ofazz;diff is calculated as follows:azz;diff ¼azzðAB@ðn;nÞNTÞazzððn;nÞNTÞ, where NT denotes
helium and carbon nanotubes for panels (b) and (c) respectively