I am using the physics package for braket (Dirac) notation. However, some expressions (such as the braket on the right) automatically rescale in the presence of, say, an operator (such as f hat), while others do not (such as the matrix element on the left).
I think this looks a bit ugly, especially when the equations are inline. Rather than making the matrix element bigger, however, I would like the braket to not automatically rescale, and just stay its "normal" size.
The code is
$$ \mel{m}{\hat{f}}{n} = \braket{\hat{f}m}{n} $$
\smash{\braket{\hat{f}m}{n}}
. Other than this, you shouldn't use the plain TeX construct$$ ... $$
for displayed equations, as it leads to bad spacing. Use\[ ... \]
instead.\braket{\smash{\hat{f}m}{\smash{n}}
?physics
package does automatic resizing, which is normally a bad decision to do.