Effective Scenario of Loop Quantum Cosmology
  Semiclassical states in isotropic loop quantum cosmology are employed to show
that the improved dynamics has the correct classical limit. The effective
Hamiltonian for the quantum cosmological model with a massless scalar field is
thus obtained, which incorporates also the next to leading order quantum
corrections. The possibility that the higher order correction terms may lead to
significant departure from the leading order effective scenario is revealed. If
the semiclassicality of the model is maintained in the large scale limit, there
are great possibilities for $k=0$ Friedmann expanding universe to undergo a
collapse in the future due to the quantum gravity effect. Thus the quantum
bounce and collapse may contribute a cyclic universe in the new scenario.
