Consider the following example in math mode:
\documentclass[a4paper,11pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\begin{document}
\begin{equation}
e^{i\frac{\theta_{\!j}}{2}}
\end{equation}
\end{document}
This is really looking ugly and this seems to be caused by j having approximately the same size as theta. How can I fix the size of j and why is this not automatically done?
\exp\Bigl(i\,\frac{\theta_{j}}{2}\Bigr)
. I'd not squeezej
against\theta
.