Undergrad Deriving Special Relativity from Particle Indistinguishability

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The discussion centers on whether special relativity can be derived from the principle of indistinguishable particles in quantum mechanics. It argues that indistinguishability does not necessarily lead to the conclusion that physical laws are the same in different inertial frames, such as a train and a lab. The laws of physics can apply to both distinguishable and indistinguishable particles without implying the causal structure of Minkowski spacetime. Additionally, the relationship between special relativity and quantum mechanics is noted, particularly regarding charge-parity-time symmetry. Ultimately, deriving special relativity from indistinguishable particles is deemed not feasible.
accdd
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Is it possible to derive special relativity from the principle of quantum mechanics according to which particles of the same type are indistinguishable?
For example, if it is not possible to distinguish particles of the same type then particles colliding in a train at constant speed should produce the same result as those colliding in the lab. This would imply that the laws of physics are the same on the train and in the laboratory.
Is that a question that makes sense?
 
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accdd said:
Is it possible to derive special relativity from the principle of quantum mechanics according to which particles of the same type are indistinguishable?
No.
For example, if it is not possible to distinguish particles of the same type then particles colliding in a train at constant speed should produce the same result as those colliding in the lab. This would imply that the laws of physics are the same on the train and in the laboratory.
That does not follow. The laws of physics apply to distinguishable particles just as they do to indistinguishable ones, so they can be the same on the train and in the lab regardless of the distinguishability of the particles.

Note that this notion that the laws of physics are the same in all inertial frames way predates the development of SR.
 
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It’s not at all clear how “indistinguishable particles” implies the causal structure of Minkowski (lorentz-signature) spacetime
(with its finite maximum signal speed).
 
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accdd said:
Is it possible to derive special relativity from the principle of quantum mechanics according to which particles of the same type are indistinguishable?
No, but SR is related to quantum mechanics charge-parity-time symmetry.
 
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In an inertial frame of reference (IFR), there are two fixed points, A and B, which share an entangled state $$ \frac{1}{\sqrt{2}}(|0>_A|1>_B+|1>_A|0>_B) $$ At point A, a measurement is made. The state then collapses to $$ |a>_A|b>_B, \{a,b\}=\{0,1\} $$ We assume that A has the state ##|a>_A## and B has ##|b>_B## simultaneously, i.e., when their synchronized clocks both read time T However, in other inertial frames, due to the relativity of simultaneity, the moment when B has ##|b>_B##...

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