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arXiv · 0911.4950

Effective Constraints and Physical Coherent States in Quantum Cosmology: A Numerical Comparison

Martin Bojowald·Artur Tsobanjan
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Abstract

A cosmological model with a cyclic interpretation is introduced, which is subject to quantum back-reaction and yet can be treated rather completely by physical coherent state as well as effective constraint techniques. By this comparison, the role of quantum back-reaction in quantum cosmology is unambiguously demonstrated. Also the complementary nature of strengths and weaknesses of the two procedures is illustrated. Finally, effective constraint techniques are applied to a more realistic model filled with radiation, where physical coherent states are not available.

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Martin Bojowald, Artur Tsobanjan. 2009-11-25. Effective Constraints and Physical Coherent States in Quantum Cosmology: A Numerical Comparison. https://doi.org/10.1088/0264-9381%2F27%2F14%2F145004

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