(January 8, 2023 at 10:06 am)Jehanne Wrote: If one could, even hypothetically, travel back to the past, then, the past must be real:
EarthSky -- Black holes are time machines, with a catch
Also seems to argue for the Many Worlds interpretation of Quantum Mechanics.
Causal loops are compatible with General Relativity, but I'm unaware of how they would generated in a Black Hole. This article gives no reference to any theory.