Timeline for Green functions, Propagators and probability amplitude that a particle propagates
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Mar 14, 2023 at 12:11 | comment | added | Noix07 | @Dr.Yoma I started writing some notes about the space of propagators (and many other things) and will put it online one day... but at the moment, I'm looking for a way to change job so i'm not really into this anymore... It's a different question, but let me add this link, eq. (9), which sheds a different light on the relation between propagator and Green's functions with a finite dimensional analogy | |
| Mar 4, 2023 at 17:15 | comment | added | Dr.Yoma | Accordingly, I would guess, that the first two are linear combinations of $\langle 0|\phi(x)\phi(y)|0\rangle$ and $\langle 0|\phi(y)\phi(x)|0\rangle$. The third one is should have a theta function of time somewhere. What is the precise answer? | |
| Mar 4, 2023 at 17:13 | comment | added | Dr.Yoma | And which of the the tree options corresponds to which propagator in QFT? The meaning of the first two kernels is that these are purely on-shell and provide the solution to the Cauchy problem with either non-vanishing field at a point or with a non-vanishing time derivative at a point. Instead, the last one is not on-shell, as it has a source. | |
| Apr 5, 2022 at 11:25 | history | edited | Noix07 | CC BY-SA 4.0 |
added 30 characters in body
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| Apr 4, 2022 at 20:15 | vote | accept | Noix07 | ||
| Apr 4, 2022 at 20:13 | history | answered | Noix07 | CC BY-SA 4.0 |