Quintessence with Hybrid Potential
  I present the numerical solution of equations of the evolution of a universe
containing background fluids (radiation, dark matter and baryonic matter), plus
a scalar matter field with a hybrid potential that is a combination of
exponential potential and power-law potential. The plot of the evolution of
density parameters is compatible with our universe; and today's values of
density parameters of dark energy, dark matter, baryonic matter, and Hubble
parameter, and the age and size of our universe, found from this model, are
very close to (and some times the same as) measured values.
