  We examine on the static and dynamical properties of quantum knots in a
Bose-Einstein condensate. In particular, we consider the Gross-Pitaevskii model
and revise a technique to construct ab initio the condensate wave-function of a
generic torus knot. After analysing its excitation energy, we study its
dynamics relating the topological parameter to its translational velocity and
characteristic size. We also investigate the breaking mechanisms of non
shape-preserving torus knots confirming an evidence of universal decaying
behaviour previously observed.
