Speaker
Saeed Rastgoo
(University of Alberta)
Description
We revisit the problem of time in the context of quantum cosmology. By considering more than one scalar matter field propagating on an FLRW cosmology, we identify several Dirac observables from which two evolving constants of motion (ECM) are constructed. One of these ECMs will play the role of the clock and against which the other ECM is measured. We quantize both of these ECMs which amounts to quantizing both the observable and the clock. We then present the consequences of such a quantum model, and in particular, the implications of quantization of the clock.
