Recent data point in the direction of a cosmological constant dominated universe .
We investigate the rôle of supersymmetric QCD with N _ { f } < N _ { c } as a possible candidate for dynamical cosmological constant ( “ quintessence ” ) .
When N _ { f } > 1 , the multiscalar dynamics is fully taken into account , showing that a certain degree of flavor symmetry in the initial conditions is necessary in order to attain the required late-time “ tracking ” attractor behavior .
A possible solution to the problem of long-range interactions of gravitational strength is proposed .
Finally we show how , as a consequence of the interaction with the Standard Model fields , the early cosmological evolution of the scalar fields may be dramatically altered , and the approach to the tracking behavior may become much more efficient .