Effective Scenario of Loop Quantum Cosmology - General Relativity and Quantum CosmologyReport as inadecuate




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Abstract: Semiclassical states in isotropic loop quantum cosmology are employed to showthat the improved dynamics has the correct classical limit. The effectiveHamiltonian for the quantum cosmological model with a massless scalar field isthus obtained, which incorporates also the next to leading order quantumcorrections. The possibility that the higher order correction terms may lead tosignificant departure from the leading order effective scenario is revealed. Ifthe semiclassicality of the model is maintained in the large scale limit, thereare great possibilities for $k=0$ Friedmann expanding universe to undergo acollapse in the future due to the quantum gravity effect. Thus the quantumbounce and collapse may contribute a cyclic universe in the new scenario.



Author: You Ding, Yongge Ma, Jinsong Yang

Source: https://arxiv.org/







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