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Inflationary Cosmology and Quantization Ambiguities in Semi-Classical Loop Quantum Gravity

Martin Bojowald·James E. Lidsey·David J. Mulryne·Parampreet Singh·Reza Tavakol
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Abstract

In loop quantum gravity, modifications to the geometrical density cause a self-interacting scalar field to accelerate away from a minimum of its potential. In principle, this mechanism can generate the conditions that subsequently lead to slow-roll inflation. The consequences for this mechanism of various quantization ambiguities arising within loop quantum cosmology are considered. For the case of a quadratic potential, it is found that some quantization procedures are more likely to generate a phase of slow--roll inflation. In general, however, loop quantum cosmology is robust to ambiguities in the quantization and extends the range of initial conditions for inflation.

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Martin Bojowald, James E. Lidsey, David J. Mulryne, Parampreet Singh, Reza Tavakol. 2004-03-25. Inflationary Cosmology and Quantization Ambiguities in Semi-Classical Loop Quantum Gravity. https://doi.org/10.1103/physrevd.70.043530

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