RECONCILING A SMALL DENSITY PARAMETER TO INFLATION

A new scenario is proposed to reconcile a small density parameter to inflation by showing that the energy of scalar fields, acting as vacuum or dark matter, mimics the cosmological constant to make up for the deficit. Our approach, an extension of the decaying cosmological constant scenario, is natural requiring no extreme fine-tuning. One of the underlying mechanisms is a nonlinear effect known as relaxation oscillation. We may anticipate a periodic but probably sporadic large-scale structure of the universe.