Is there a way to generically enlarge the spacing between simple symbols in mathmode (not asking for spacing around operators nor for individually applying commands such as \! for each whitespace)? Microtype's \textls{} and \lsstyle seem to only work for textparts of an equation.
\documentclass{article}
\usepackage{mathtools}
\usepackage{microtype}
\begin{document}
$\displaystyle
\hat{H} = \frac12 m\omega_\text{m}^2 \hat x_\text{m}^2+\frac{\hat p_{\text{m}}^2}{2m}
$
\textls[500]{%
$\displaystyle
\hat{H} = \frac12 m\omega_\text{m}^2 \hat x_\text{m}^2+\frac{\hat p_{\text{m}}^2}{2m}
$
}
\end{document}
To further clarify, I am looking for a way to modify the space between ordinary atoms as they seem to be called.
