Timeline for Why are positrons traveling backward in time in Feynman diagrams?
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
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| Jul 7, 2022 at 13:49 | vote | accept | Ryder Rude | ||
| Jul 7, 2022 at 11:59 | answer | added | Davide Sangalli | timeline score: 3 | |
| Jul 7, 2022 at 9:52 | comment | added | rob♦ | Both correct. The arrows make it easier to conserve lepton number at each vertex. | |
| Jul 7, 2022 at 9:47 | comment | added | Ryder Rude | @rob Can we say that the arrows in the Feynman diagrams have no effect on the calculation? They're just there to indicate that electron and positron are similar beasts? Also, if a positron backwards arrow is labelled by a three momentum $\vec{p}$, then I should not conclude that its actual three momentum is $-\vec{p}$, right? | |
| Jul 7, 2022 at 9:42 | comment | added | rob♦ | Perhaps related; see also. | |
| Jul 7, 2022 at 8:10 | comment | added | Ryder Rude | @Qmechanic Diagram of type 1 Bhabha process. The incoming positron is drawn to have a momentum opposite to the time direction | |
| Jul 7, 2022 at 8:06 | history | edited | Qmechanic♦ |
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| Jul 7, 2022 at 8:06 | comment | added | Qmechanic♦ | Who are we? Which page? | |
| Jul 7, 2022 at 4:35 | history | asked | Ryder Rude | CC BY-SA 4.0 |