Matches in SemOpenAlex for { <https://semopenalex.org/work/W1528389006> ?p ?o ?g. }
Showing items 1 to 85 of
85
with 100 items per page.
- W1528389006 endingPage "135004" @default.
- W1528389006 startingPage "135004" @default.
- W1528389006 abstract "It is often conjectured that a choice of time function merely sets up a frame for the quantum evolution of the gravitational field, meaning that all choices should be in some sense compatible. In order to explore this conjecture (and the meaning of compatibility), we develop suitable tools for determining the relation between quantum theories based on different time functions. First, we discuss how a time function fixes a canonical structure on the constraint surface. The presentation includes both the kinematical and the reduced perspective, and the relation between them. Second, we formulate twin theorems about the existence of two inequivalent maps between any two deparameterizations, a formal canonical and a coordinate one. They are used to separate the effects induced by choice of clock and other factors. We show, in an example, how the spectra of quantum observables are transformed under the change of clock and prove, via a general argument, the existence of choice-of-time-induced semiclassical effects. Finally, we study an example, in which we find that the semiclassical discrepancies can in fact be arbitrarily large for dynamical observables. We conclude that the values of critical energy density or critical volume in the bouncing scenarios of quantum cosmology cannot in general be at the Planck scale, and always need to be given with reference to a specific time function." @default.
- W1528389006 created "2016-06-24" @default.
- W1528389006 creator A5003941765 @default.
- W1528389006 date "2015-05-28" @default.
- W1528389006 modified "2023-10-12" @default.
- W1528389006 title "Multiple choices of time in quantum cosmology" @default.
- W1528389006 cites W1973834515 @default.
- W1528389006 cites W2004268737 @default.
- W1528389006 cites W2009198547 @default.
- W1528389006 cites W2036463560 @default.
- W1528389006 cites W2049237181 @default.
- W1528389006 cites W2113513472 @default.
- W1528389006 cites W2140056616 @default.
- W1528389006 cites W3103421916 @default.
- W1528389006 cites W3105638176 @default.
- W1528389006 cites W3123131937 @default.
- W1528389006 doi "https://doi.org/10.1088/0264-9381/32/13/135004" @default.
- W1528389006 hasPublicationYear "2015" @default.
- W1528389006 type Work @default.
- W1528389006 sameAs 1528389006 @default.
- W1528389006 citedByCount "25" @default.
- W1528389006 countsByYear W15283890062015 @default.
- W1528389006 countsByYear W15283890062016 @default.
- W1528389006 countsByYear W15283890062017 @default.
- W1528389006 countsByYear W15283890062018 @default.
- W1528389006 countsByYear W15283890062019 @default.
- W1528389006 countsByYear W15283890062020 @default.
- W1528389006 countsByYear W15283890062021 @default.
- W1528389006 countsByYear W15283890062022 @default.
- W1528389006 countsByYear W15283890062023 @default.
- W1528389006 crossrefType "journal-article" @default.
- W1528389006 hasAuthorship W1528389006A5003941765 @default.
- W1528389006 hasBestOaLocation W15283890062 @default.
- W1528389006 hasConcept C108568745 @default.
- W1528389006 hasConcept C121332964 @default.
- W1528389006 hasConcept C121864883 @default.
- W1528389006 hasConcept C202299901 @default.
- W1528389006 hasConcept C202444582 @default.
- W1528389006 hasConcept C2780990831 @default.
- W1528389006 hasConcept C32848918 @default.
- W1528389006 hasConcept C33332235 @default.
- W1528389006 hasConcept C33923547 @default.
- W1528389006 hasConcept C45018233 @default.
- W1528389006 hasConcept C535169671 @default.
- W1528389006 hasConcept C62520636 @default.
- W1528389006 hasConcept C74650414 @default.
- W1528389006 hasConcept C84114770 @default.
- W1528389006 hasConceptScore W1528389006C108568745 @default.
- W1528389006 hasConceptScore W1528389006C121332964 @default.
- W1528389006 hasConceptScore W1528389006C121864883 @default.
- W1528389006 hasConceptScore W1528389006C202299901 @default.
- W1528389006 hasConceptScore W1528389006C202444582 @default.
- W1528389006 hasConceptScore W1528389006C2780990831 @default.
- W1528389006 hasConceptScore W1528389006C32848918 @default.
- W1528389006 hasConceptScore W1528389006C33332235 @default.
- W1528389006 hasConceptScore W1528389006C33923547 @default.
- W1528389006 hasConceptScore W1528389006C45018233 @default.
- W1528389006 hasConceptScore W1528389006C535169671 @default.
- W1528389006 hasConceptScore W1528389006C62520636 @default.
- W1528389006 hasConceptScore W1528389006C74650414 @default.
- W1528389006 hasConceptScore W1528389006C84114770 @default.
- W1528389006 hasFunder F4320322511 @default.
- W1528389006 hasIssue "13" @default.
- W1528389006 hasLocation W15283890061 @default.
- W1528389006 hasLocation W15283890062 @default.
- W1528389006 hasLocation W15283890063 @default.
- W1528389006 hasOpenAccess W1528389006 @default.
- W1528389006 hasPrimaryLocation W15283890061 @default.
- W1528389006 hasRelatedWork W1838380013 @default.
- W1528389006 hasRelatedWork W1902007695 @default.
- W1528389006 hasRelatedWork W1964816981 @default.
- W1528389006 hasRelatedWork W1984910053 @default.
- W1528389006 hasRelatedWork W2079642974 @default.
- W1528389006 hasRelatedWork W2568003727 @default.
- W1528389006 hasRelatedWork W3038035353 @default.
- W1528389006 hasRelatedWork W3100500391 @default.
- W1528389006 hasRelatedWork W3101555215 @default.
- W1528389006 hasRelatedWork W3201101374 @default.
- W1528389006 hasVolume "32" @default.
- W1528389006 isParatext "false" @default.
- W1528389006 isRetracted "false" @default.
- W1528389006 magId "1528389006" @default.
- W1528389006 workType "article" @default.