Q ui <chr_var letter="s" var="long">∫</chr_var>i ert ua<chr_abbr type="reg" class="dc" expan="in" cert="no">i-hbar</chr_abbr><chr_var letter="s" var="long">∫</chr_var> <chr_abbr type="reg" class="dc" expan="qui" cert="no">q-vbar</chr_abbr>l ch<chr_abbr type="reg" class="dc" expan="an" cert="no">a-hbar</chr_abbr>celot. 