Timeline for "Running with momentum $p$" v.s. "running with renormalization scale $\mu$"
Current License: CC BY-SA 4.0
4 events
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| Jan 12, 2021 at 16:52 | comment | added | MadMax | "No, you can't simply identify the renormalization scale $\mu$ with the momentum $p$." No, I am NOT identifying the renormalization scale $\mu$ with the momentum $p$. Instead, I am identifying the renormalization scale $\mu$ with the initial condition at $p \rightarrow p_0 = \mu$. | |
| Oct 22, 2018 at 17:17 | comment | added | knzhou | @MadMax Of course you can avoid having the letter $\mu$ in your formulas if you want, I'm just saying why it is useful to have it. | |
| Oct 22, 2018 at 16:41 | comment | added | MadMax | "Can you use renormalization schemes without $\mu$"? Surely one can, without resorting to any kind of RG. Just resume the geometric series (that is how Landau pole was found by Landau!) of Feynman diagrams a la, 1/N, rainbow/ladder approximation, etc. There are tons of ways of doing this. | |
| Oct 22, 2018 at 16:31 | history | answered | knzhou | CC BY-SA 4.0 |