Timeline for What does $\overset\leftrightarrow{\partial_{\mu}}$ means?
Current License: CC BY-SA 4.0
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| Feb 17, 2023 at 21:34 | comment | added | Sebastian Riese | Note: The convention is not universal, outside of QFT-contexts it is also often used to just mean that the derivative acts in both directions: $a \overset{\leftrightarrow}{\partial} b = a \overset{\leftarrow}{\partial} b + a \overset{\rightarrow}{\partial} b$ – this may be especially convenient when handling vector identities (with $\nabla$ in place of $\partial$) and non-commutative operations (e.g. as in $\vec a \times \overset{\leftarrow}{\nabla}$). It is also useful in caculations done in Einstein notation. | |
| S Feb 17, 2023 at 20:06 | history | suggested | EqualToZero | CC BY-SA 4.0 |
Definition from Srednicki's QFT textbook
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| Feb 17, 2023 at 17:45 | review | Suggested edits | |||
| S Feb 17, 2023 at 20:06 | |||||
| Sep 16, 2020 at 4:58 | history | answered | Pipe | CC BY-SA 4.0 |