Abstract
We show that the occurrence of quantum gravitational collapse and, more generally, the validity of Wheeler’s “rule of unanimity” are inextricably linked to the classical choice of time. The crucial distinction is between “fast” and “slow” times, that is, between times which give rise to complete or incomplete classical evolution respectively. We conjecture that unitary slow-time quantum dynamics is always non-singular, while unitary fast-time quantum dynamics inevitably leads to collapse. These findings are illustrated by an analysis of the dust-filled Friedmann-Lemaitre-Robertson-Walker universes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
