A model of a universe without big bang singularity is presented, which displays an early inflationary period ending just before a phase transition to a kination epoch. The model produces enough heavy particles so as to reheat the universe at temperatures in the MeV regime. After the reheating, it smoothly matches the standard Lambda CDM scenario.
Haro, J., Elizalde, E. Inflation and late-time acceleration from a double-well potential with cosmological constant. "General relativity and gravitation", 1 Juny 2016, vol. 48, núm. 6.