We study several models of relevance for the dynamical breaking of supersymmetry which could provide a scalar component with an equation of state $p=w\rho ,$$-1<w<\mathrm{}0.\mathrm{}$ Such models would provide a natural explanation for recent data on the cosmological parameters.

• Received 30 October 1998

DOI:https://doi.org/10.1103/PhysRevD.60.063502