Talk:Feynman slash notation
Latest comment: 14 years ago by Andremanoel in topic Metric convention
![]() | This article is rated Stub-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects: | ||||||||||
|
Metric convention
editFor a g=(1,-1,-1,-1) metric, shouldn't the expression
actually be:
—Preceding unsigned comment added by 169.234.141.96 (talk • contribs)
- No, because both & are independent of the metric convention. Or put it another way, because the metric does not explicitly appear in the slash definition.
- Contrast with the definitions:
- and
- where the sign is metric convention dependent, + for g(+---) and - for g(-+++).
- I guess the article should say this.
- I agree with the response above, but when lowering indexes you have to take the metric in account. Therefore, is wrong to say that , because the dot product between and is the standard inner product of the orthonormal Euclidean space.
- In this way, I've corrected the signs in the matrix. You can check on Griffiths, for instance, that the correct form is this one.