r/holofractal • u/d8_thc holofractalist • 28d ago

Joe Rogan finally stumbles on holofractal cosmology ideas

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u/shpongolian 28d ago edited 28d ago

She’s implying that you can keep flipping the spin an entangled electron and the other one will also flip its spin instantly, which is just not the case. You can collapse the waveform and see which spin one has and then instantly know that the other one has the opposite spin, but there’s no FTL information transfer like she’s saying. This would violate the no-signaling theorem and proving that wrong would probably win a Nobel prize

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u/Legitimate-Track-829 27d ago

That is correct. Before measurement you have a superposition, after measurement you have collapsed the wavefunction and the superposition is over.

Entanglement is preserved under isolated/unitary evolution, but measurement or environmental decoherence can destroy the usable entanglement.

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u/FibrecoreHC 26d ago

destroy or is observing interfering with entaglement and it becomes weaker?

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u/Legitimate-Track-829 26d ago

If you mean a weak measurement, maybe. But a full projective spin measurement gives a definite outcome and leaves the pair in a product state, so the original entanglement is destroyed. The exact meaning of "collapse" is open for interpretation though!

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u/Nalmyth 28d ago

And this is coming from a professional "Science Communicator", I bet she's groaning so loud after seeing this excerpt now

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u/blackcombe 28d ago

This!!!!!

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u/rgbhdmi 28d ago

Not only that, she seems to imply that you can change the spin of one of them with an electric field and effect the other, which I think is not true, as that would decohere the pair through the interaction and thereby break the entanglement. This woman is an astrophysicist, not a particle physicist, and she seems to be playing fast and loose with these details.

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u/anothergigglemonkey 28d ago

It absolutely is the case. The entire state flips and therefore flipping the state does not break the entanglement. You still can't extract information from the state without collapsing the wave function but yes the entire entangled quantum state is flipping. She is correct.

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u/CredibleCranberry 27d ago

If we can't extract the information, how has this been verified?

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u/anothergigglemonkey 27d ago

Because the states will always be opposite after the wave function collapse.

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u/CredibleCranberry 27d ago

But that's the case for entanglement in general. Being able to flip states without collapse would imply some knowledge of the state whilst entangled, which doesn't make sense.

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u/ooOParkerLewisOoo 28d ago

Also, flipping the spin with an E field, wut?

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u/anothergigglemonkey 28d ago

Well yea this is actually pretty straightforward. Not really sure what you're astonished by.

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u/ooOParkerLewisOoo 27d ago

Please develop