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Descartz2000
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Is MWI really Bohmian without the non-local factor? Is this the only advantage of MWI?
MWI is also nonlocal, in the sense that the wave function, being a function in a many-particle configuration space, is a nonlocal object. But one can say that Bohmian mechanics is even more nonlocal, in the sense that it contains nonlocal influences (forces) which MWI does not contain.Descartz2000 said:Is MWI really Bohmian without the non-local factor? Is this the only advantage of MWI?
That is true, not only for MWI, but for Bohmian mechanics as well.Dmitry67 said:In any case, locality 'emerges' on the macroscopic level
I think that such a postulate lacks an intrinsic motivation. Namely, if one did not know what one HAS to obtain (the Born rule), I don't see why one would take this postulate.Dmitry67 said:What do you think about the weak probability postulate (the probability is a function of the measure of existence)?
Demystifier said:However, if the tree is the only stuff that exists, then it is not clear why the Born rule is to be valid. After all, what does it mean that the thick branch has a larger probability than the thin branch?
I see it as an explanation why probability CANNOT be explained in MWI.Dmitry67 said:It is explained:
In a deterministic theory, such as the MWI, the only possible meaning for probability is an ignorance probability, but there is no relevant information that an observer who is going to perform a quantum experiment is ignorant about
MWI stands for Many-Worlds Interpretation, a theory in quantum mechanics that suggests the existence of multiple parallel universes.
Bohmian mechanics, also known as de Broglie–Bohm theory, is an interpretation of quantum mechanics that proposes that particles have definite positions at all times, in contrast to the probabilistic nature of other interpretations.
MWI and Bohmian mechanics are both interpretations of quantum mechanics, but they have different underlying principles and assumptions. While MWI proposes the existence of multiple universes, Bohmian mechanics suggests that particles have definite positions, even at the quantum level.
This is a topic of debate among scientists and there is no definite answer. Some argue that without the non-local factor, MWI and Bohmian mechanics are fundamentally different and cannot be considered the same. Others suggest that there are similarities between the two interpretations, but they are not identical.
The non-local factor in MWI and Bohmian mechanics refers to the concept of entanglement, where two or more particles can be connected in such a way that the state of one particle affects the state of the other, even if they are not physically connected. This is a key aspect in both interpretations and is often a point of comparison between MWI and Bohmian mechanics.