Timeline for From a co-moving frame, what does a free electron look like, is it a wave or a point?
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Jan 5, 2022 at 2:00 | vote | accept | Árpád Szendrei | ||
Sep 24, 2021 at 7:36 | comment | added | Emilio Pisanty | @Arpad That is correct. There is no guarantee that the co-moving frame exists (and, as a rule, it doesn't). For the co-moving frame to exist, the electron needs to have a well-defined velocity (and therefore momentum). This is largely forbidden by the HUP. Hence, the co-moving frame only exists in a few cases. | |
Sep 24, 2021 at 1:59 | comment | added | Árpád Szendrei | Thank you so much! Can you please elaborate on this: "a momentum eigenstate and there would not exist any comoving frame of that electron."? You mean if the electron is not in an eigenstate, then there is no co-moving frame? | |
Sep 23, 2021 at 23:38 | history | answered | user87745 | CC BY-SA 4.0 |