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This article is a great addition to the Wikipedia -- the phrase "kinetic term" is thrown around a lot, but maddeningly, usually without even an attempt at a definition...but to get to my point, so does "interaction term" (and less common, but actually mentioned in the article, is "mass term"...and doesn't there a "free" term too? I can't even find a name for that one).

Has there been any work towards adding similar pages for these other terms, and/or adding brief mention on the Lagrangian page? I'd be glad to help, but to be honest the reason I came here looking for these pages was because I'm pretty ignorant of the subject.

Thanks, Dzustin (talk) 22:59, 11 August 2011 (UTC)[reply]

Echoing the comment above, it seems pretty silly that there does not exist a corresponding Potential term article. — Preceding unsigned comment added by 96.40.48.159 (talk) 13:24, 2 June 2020 (UTC)[reply]

The metric tensor should be shown explicitly as in the second form here:

in order to conform to general covariance. JRSpriggs (talk) 14:52, 12 April 2025 (UTC)[reply]