[jungturk]

This video w/ Dr Iva Fuentes, from two weeks ago, spends a few segments on the breakdown of the equivalence principle w/ quantum clocks.

https://youtu.be/cUj2TcZSlZc?t=4006&si=Ykt0JDqEKk1ObMp3

Video notes have lots of references to relevant papers (and the video itself surveys a few aspects of these issues).