Timeline for Defining the multiplication of distributions in the context of QFT : Colombeau algebra vs Regularity structure?
Current License: CC BY-SA 4.0
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| Apr 27, 2023 at 16:58 | history | edited | Carlo Beenakker | CC BY-SA 4.0 |
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| Apr 27, 2023 at 16:56 | comment | added | Carlo Beenakker | I'm only familiar with $d=2$, when normal ordering removes the singularities. If Colombeau is applicable also for $d=3$ then, indeed, it is stronger than Wick. In any case my "equivalent" statement was too strong, I will change that, thanks for your feedback. | |
| Apr 27, 2023 at 15:43 | comment | added | Isaac | In which spacetime dimensions? For the$\phi^4$ theory, it is a very crucial factor.. | |
| Apr 27, 2023 at 15:34 | comment | added | Carlo Beenakker | I may be mistaken, but I thought that normal ordering the $\phi^4$ interaction gives the same result as in Colombeau algebra. | |
| Apr 27, 2023 at 12:42 | comment | added | Isaac | In what sense are they equivalent? Normal ordering applies for the free field operators on a Fock space, as far as I know, | |
| Apr 27, 2023 at 5:59 | history | edited | Carlo Beenakker | CC BY-SA 4.0 |
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| Apr 26, 2023 at 20:20 | history | edited | Carlo Beenakker | CC BY-SA 4.0 |
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| Apr 26, 2023 at 20:14 | history | answered | Carlo Beenakker | CC BY-SA 4.0 |