[Tex/LaTex] is it possible to change the depth of subscripts

Question

I have the following formula:

$ F_{\!\bm{H}}  F_{\overline{\!\!\bm{H}\!}} $

In this case both subscripts end at different depths (but start at the same height). I'd like them to end at the same depth. Has anybody an idea?

Answer 1

You can do the following:

F_{\!\bm{H}\vphantom{\overline{\!\!\bm{H}\!}}} F_{\overline{\!\!\bm{H}\!}}

The \vphantom command makes vertical space the same height its argument. Depending on how often you need this or how predictable it is, you might be able to make a macro to add the \vphantom part automatically.