How fast is quantum entanglement? Scientists investigate it at attosecond scale

Re:How fast is quantum entanglement? Scientists investigate ... by cyberax on Wednesday October 23, 2024 @12:05PM (#41926414)

Theoretically, a massless particle can move slower than light. But then it'll have zero energy and momentum, so it won't be able to interact with anything.

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Re:How fast is quantum entanglement? Scientists investigate ... by MattPalmer1086 on Wednesday October 23, 2024 @04:49PM (#41929144)

Thanks. The equations give the answer in the end, I found this explanation the best [1].

The only way to get a zero mass is if the energy is zero, or the velocity is c.

[1] https://profoundphysics.com/why-do-photons-have-no-mass-simp...

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