Noncovariance of the dressed-metric approach in loop quantum cosmology

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The dressed-metric approach is shown to violate general covariance by demonstrating that it cannot have an off-shell completion in which the correct infinitesimal relations of space-time hypersurface deformations are realized. The main underlying reason - a separation of background degrees of freedom and modes of inhomogeneity that is incompatible with covariance - is shared with other approaches such as hybrid loop quantum cosmology.

Original languageEnglish (US)
Article number023532
JournalPhysical Review D
Issue number2
StatePublished - Jul 15 2020

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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