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arXiv · hep-th/0407115

Loop Quantum Gravity and the Cyclic Universe

Martin Bojowald·Roy Maartens·Parampreet Singh
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Abstract

Loop quantum gravity introduces strong non-perturbative modifications to the dynamical equations in the semi-classical regime, which are responsible for various novel effects, including resolution of the classical singularity in a Friedman universe. Here we investigate the modifications for the case of a cyclic universe potential, assuming that we can apply the four-dimensional loop quantum formalism within the effective four-dimensional theory of the cyclic scenario. We find that loop quantum effects can dramatically alter the near-collision dynamics of the cyclic scenario. In the kinetic-dominated collapse era, the scalar field is effectively frozen by loop quantum friction, so that the branes approach collision and bounce back without actual collision.

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Martin Bojowald, Roy Maartens, Parampreet Singh. 2004-09-23. Loop Quantum Gravity and the Cyclic Universe. https://doi.org/10.1103/physrevd.70.083517

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