Qubit Clock in Quantum Cosmology

We investigate the emergent time scenario in quantum cosmology based on the Page–Wotters approach. Using a quantum cosmological model with a qubit clock, it is demonstrated how the entanglement between the qubit clock and the geometry derives emergence of a time parameter, which defines evolution of...

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Bibliographic Details
Published in:	Universe
Main Author:	Yasusada Nambu
Format:	Article
Language:	English
Published:	MDPI AG 2022-02-01
Subjects:	quantum comology emergent time quantum clock Wheeler-DeWitt equation entanglement Fisher information
Online Access:	https://www.mdpi.com/2218-1997/8/2/99

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