Free rotation of nanoparticle in BEC
We propose a new exiting possibility to observe free rotation of dopant particle in BEC to have a better understanding of superfluidity exhibited by BEC. We take the idea from the experiment of doped molecule in 4 He as it shows significance of superfluidity because of free rotation as explained by the ro-vibrational spectrum. From the ratio of the interparticle distance of 4 He and the dopant molecule there, we find that the dopant in BEC should be a nanoparticle and recommend an experiment to observe free rotation in BEC.
