What are your thoughts on the alternatives? My frustration with the subject as it is discussed on LW is that everyone only speaks about Many Worlds in contrast to Copenhagen. It’s a bit like watching a man beat up a little girl and concluding he is the strongest man in the world. I wish people here would pay more attention to the live alternatives. I find De Broglie-Bohm particularly intriguing. I hope you write the sequence.
These are my rather circumspect thoughts on where the answer will come from.
Bohmian mechanics is ontologically incompatible with special relativity. You still get relativistic effects, but the theory requires a notion of absolute simultaneity in order to be written down, so there is an undetectable preferred reference frame. Still, I have at least two technical reasons (weak values and holographic renormalization group) for thinking it is close to something important, so it’s certainly in my thoughts (when I think about this topic).
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.
What are your thoughts on the alternatives? My frustration with the subject as it is discussed on LW is that everyone only speaks about Many Worlds in contrast to Copenhagen. It’s a bit like watching a man beat up a little girl and concluding he is the strongest man in the world. I wish people here would pay more attention to the live alternatives. I find De Broglie-Bohm particularly intriguing. I hope you write the sequence.
These are my rather circumspect thoughts on where the answer will come from.
Bohmian mechanics is ontologically incompatible with special relativity. You still get relativistic effects, but the theory requires a notion of absolute simultaneity in order to be written down, so there is an undetectable preferred reference frame. Still, I have at least two technical reasons (weak values and holographic renormalization group) for thinking it is close to something important, so it’s certainly in my thoughts (when I think about this topic).
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.