Ehrenfest's principle and the problem of time in quantum gravity

DOI10.1016/0550-3213(96)00304-5zbMath0925.83023arXivgr-qc/9602033OpenAlexW1982199158MaRDI QIDQ1920744

Claus Kiefer, Thorsten Brotz

Publication date: 13 August 1996

Published in: Nuclear Physics. B (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/gr-qc/9602033

zbMATH Keywords

Hilbert spacesemiclassical approximationconsistency conditionstime problemWheeler DeWitt equation

Mathematics Subject Classification ID

Gravitational interaction in quantum theory (81V17) Quantization of the gravitational field (83C45)

Cites Work

• Unitarity condition on quantum fields in semiclassical gravity
• World sheet diffeomorphisms and the canonical string
• Quantum observables and recollapsing dynamics
• Almost ideal clocks in quantum cosmology: a brief derivation of time
• Localized quantum subsystem in a semiclassical universe
• Quantum Theory of Gravity. I. The Canonical Theory
• Wave packets in quantum cosmology and the cosmological constant
• Semiclassical quantum states for black holes
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