  The eigenfunctions of the Two-Rotors Model are superpositions of states
corresponding to precessions of the rotors around two orthogonal axes. In
Nuclear Physics such an entanglement has not been directly confirmed. We
discuss how it might be observed and compare with the application of the TRM to
single domain nanoparticles. In the latter case, in addition to the present
indirect evidence there is the possibility of direct observation in experiments
at temperatures of the order of 1 K.
