I have the following tex code,
\begin{equation}
\ket{f_{\alpha}(\bm{r}+\bm{e}_{\alpha} \Delta t, t+\Delta t)} =
\ket{f_{\alpha}(\bm{r},t)} -\bm{M}^{-1}\hat{\bm{S}}
(\ket{m_{\alpha}(\bm{r},t)}-\ket{m_{\alpha}^{(eq)}(\bm{r},t)}),
\end{equation}
which provides the following equation 
The right-most ket operator is bigger due to the ^(eq). How to bring the ket brace to normal size?
\ket– Salim Bou Sep 23 '16 at 17:23physicspackage. You can refer this answer: http://tex.stackexchange.com/a/214731/44940 – SKPS Sep 23 '16 at 17:32\smashto diminish the height of what's inside the brakets. that's the approach i'd suggest. if you find that useful, i'll produce a "tailored" solution for this particular example. – barbara beeton Sep 23 '16 at 17:44texdoc physicsyou can use\ket*to suppress automatic sizing (see page 8) – David Carlisle Sep 23 '16 at 17:46physicspackage. i only knew aboutbraket, and the features and support are different. so what is done depends on which package is actually used. – barbara beeton Sep 23 '16 at 17:55braketpackage after loadingphysics. – Werner Sep 23 '16 at 20:21