This is the title of a new paper published by two Portuguese scientists (see http://www.nature.com/srep/2015/150723/srep11548/full/srep11548.html or http://www.nature.com/srep/2015/150723/srep11548/pdf/srep11548.pdf). They developed a math model of the synchronization of the two clocks and the experimental data has validated the model. Now they are extending their model. They expect to became to a model for matrix of "clocks". My question is: Is it possible that such a model could be used to explain also the behavior of ultra frozen helium atoms, when they synchronize their vibrational mode?