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

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

2004-03-25

arxiv.org/abs/gr-qc/0403106v1

Phys.Rev. D70 (2004) 043530

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

15 pages, 8 figures

Scientific paper

10.1103/PhysRevD.70.043530

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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