Local symmetry properties of pure three-qubit states
Hilary A. Carteret, Anthony Sudbery · Journal of Physics A Mathematical and General · 2000
Entanglement types of pure states of three spin-½ particles are classified by means of their stabilizers in the group of local unitary transformations. It is shown that the stabilizer is generically discrete, and that a larger stabilizer indicates a stationary value for some local invariant. We describe all the exceptional states with enlarged stabilizers.