Timeline for On scheme dependence in QFT renormalization
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 9, 2019 at 11:41 | vote | accept | chichi | ||
| Aug 9, 2019 at 3:28 | comment | added | MannyC | Correct, the physics doesn't care. Within any given scheme you can compute observables (like cross sections or life times) and use those to fix your constants in that scheme. Once the Lagrangian is fixed all other predictions that you can make with the theory are unambiguous. | |
| Aug 9, 2019 at 3:20 | comment | added | chichi | Just want to be confirmed by an expert before I go on. May I make sure if my understanding of my 2nd question correct? i.e. we need to "fit" the finite part with arbitrary "unknown parameter" with an experiment before starting prediction. I think this is answered by the scheme session of your post. However, I am wondering if different schemes gives same physical value at same energy scale? Physics should not depend on whether you absorb Euler constant or not, am I right? | |
| Aug 9, 2019 at 2:56 | comment | added | chichi | Many thanks! That's spot on. Feel much more comfortable and motivated to keep learning renormalizatoin, to keep being "renormalized"! | |
| Aug 9, 2019 at 2:38 | history | answered | MannyC | CC BY-SA 4.0 |