Manuscript XII-C@1 · XII-C.tex · section · dead1004
Euler operators and the unchanged matter defect
C2: the changed fixed-background Noether identity › Euler operators and the unchanged matter defect · lines 800–877
XII-C@1#eq:scalar-euler, XII-C@1#eq:Z, XII-C@1#eq:eD, XII-C@1#eq:Noperators, XII-C@1#eq:matterdefect
Define
The scalar equation is unchanged. Explicitly,
Put and
The exact formal metric derivative is
where
In particular, for coupling-independent fields,
For a symmetric contravariant density , set
Thus .
The unchanged scalar-background defect is
The derivative-of-switch term remains visible. There are no derivatives of in the metric variation of the minimally coupled scalar density itself.
Displayed formulas in this passage
XII-C@1#eq:scalar-euler · line 810
XII-C@1#eq:Z · line 821
XII-C@1#eq:eD · line 827
XII-C@1#eq:Noperators · line 852
XII-C@1#eq:matterdefect · line 866
unlabeled · line 803
unlabeled · line 836
unlabeled · line 844