I’ll admit that emergent Lorentz invariance is not a completely unreasonable idea; there are many other examples of emergent symmetry. Though I wonder how it looks when you try to obtain emergent diffeomorphism invariance (for general relativity) as well.
Goldstein and Tumulka looks a little artificial. They allow for entanglement but not interaction, and thereby avoid causal loops in time. I’m far more interested in attempts to derive quantum nonlocality from time loops. Possibly their model can be obtained from a time-loop model in the limit where interactions are negligible.
Thoughts on this?
I’ll admit that emergent Lorentz invariance is not a completely unreasonable idea; there are many other examples of emergent symmetry. Though I wonder how it looks when you try to obtain emergent diffeomorphism invariance (for general relativity) as well.
Goldstein and Tumulka looks a little artificial. They allow for entanglement but not interaction, and thereby avoid causal loops in time. I’m far more interested in attempts to derive quantum nonlocality from time loops. Possibly their model can be obtained from a time-loop model in the limit where interactions are negligible.