Effective Theories of Quantum Cosmology

Xinquan Wu; Yongge Ma

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arXiv · 1212.5874

Effective Theories of Quantum Cosmology

Xinquan Wu·Yongge Ma

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Abstract

We introduce two possible ways of defining effective constraints of quantum systems and applied this effective constraint method to models of WDW Quantum Cosmology and Loop Quantum Cosmology. We analyze effective Hamiltonian constraint on both second and third order and calculate Hubble parameter as well as modified Friedmann equation of each model. Then we compare with a special case using coherent state. It shows that this method is reasonable and as before the classical Big Bang singularity is replaced by a quantum bounce in Loop Quantum Cosmology.

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Xinquan Wu, Yongge Ma. 2012-12-24. Effective Theories of Quantum Cosmology. https://arxiv.org/abs/1212.5874

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