description of the quark dynamics is developed and applied to the description of neutron
stars. Starting from a SU (3) symmetry approach, it is shown that this symmetry has to be
broken in order to satisfy the constraints set by the hypernuclei and by neutron stars. The
model is able to describe observations such as two-solar-mass stars or the radius of
canonical neutron stars within the uncertainties presently accepted. If the optical potentials …