Transient acceleration from a hybrid Chaplygin gas
  We extend the Chaplygin gas model for dark matter and dark energy unification by promoting the Chaplygin gas parameter A to the potential for an extra scalar with canonical kinetic energy. The hybrid model allows for accelerated Hubble expansion to be a transient effect around redshift zero. 
Neven Bilic (1), Gary B. Tupper (2), and Raoul D. Viollier (2) ((1)   Rudjer Boskovic Institute, Zagreb, Croatia, (2) Univer...