Dust time in quantum cosmology
classification
🌀 gr-qc
astro-ph.COhep-th
keywords
timecosmologydustquantumadditionalanalysisapplicabilityapproach
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We give a formulation of quantum cosmology with a pressureless dust and arbitrary additional matter fields. The dust provides a natural time gauge corresponding to a cosmic time, yielding a physical time independent Hamiltonian. The approach simplifies the analysis of both Wheeler-deWitt and loop quantum cosmology models, broadening the applicability of the latter.
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