I am working on a research paper using LaTeX for an IEEE journal, and this paper involves some constants (say, a, b, c and d). When I write subsection headings involving these constants, for example..
\documentclass{ieeeaccess}
\begin{document}
\section{Introduction}
\section{Dynamic Analysis}
\subsection{Changes in the pressure constant $a$}
xxxxxxx yyyyyyy zzzzz
\end{document}
This subsection heading is printed in capital letters when I run LaTeX and reviewers are asking me to fix the subsection headings so that the system constants appear in small letters rather than capital letters.
How can I take care of this problem?