# Entropy of entanglement between quantum phases of a three-level matter-radiation interaction model. (arXiv:1712.01889v1 [quant-ph])

phase transition between normal and super-radiant regions of a system of a

finite number of three-level atoms interacting in a dipolar approximation with

a one-mode electromagnetic field. The atoms are treated as semi-distinguishable

using different cooperation numbers and representations of SU(3), variables

which are relevant to the sensitivity of the entropy with the transition. The

results are computed for all three possible configurations ({\Xi}, {\Lambda}

and V ) of the three-level atoms.