%% bert's special tweaks

\setcounter{topnumber}{1}
\def\topfraction{0.75}
\setcounter{bottomnumber}{1}
\def\bottomfraction{0.75}
\def\textfraction{0.2}

\newdimen\imagesize        \imagesize=3.69in
\newdimen\imagesizetoo  \imagesizetoo=3.50in

\newif\iftwoabstracts
\newif\ifpix
\newif\ifcode

%\skip\footins=18pt plus 15pt minus 0pt
%\parskip=0pt plus 2pt minus 0pt
%\flushbottom\sloppy
%\begingroup\makeatletter
%\global\@noskipsecfalse
%\@tempdima=\baselineskip \global\baselineskip=\@tempdima plus 3pt minus 2pt
%\endgroup
%\showthe\baselineskip

\def\picture#1{\begingroup
  \oddsidemargin=0pt \evensidemargin=0pt \leftmargin=0pt \rightmargin=0pt
  \textwidth=6.5in \hsize=\textwidth \epsfxsize=\textwidth \epsfbox{#1}
\endgroup}
\def\halfpage#1{\begingroup
  \oddsidemargin=0pt \evensidemargin=0pt \leftmargin=0pt \rightmargin=0pt
  \textwidth=6.5in \hsize=\textwidth \epsfysize=4in \epsfbox{#1}
\endgroup}

% this makes some bibliographic entries work right
\def\parens#1{(#1)}

% Math symbols
%\def\lbar{{\raise2pt\hbox{\mathmode\mathchar"7B}\mkern -9mu\lambda}}
\def\lbar{\overset{\mbox{--}}{\smash{\lambda}}}

% Make some Greek letters appear italicized
\let\Psi=\varPsi
\let\Phi=\varPhi

% common operators and vector quantities
\def\H{{\hat H}}
\def\U{{\hat U}}
\def\UU{{\hat U_1}}
\def\V{{\hat V}}
\def\K{{\hat K}}
\def\x{{\bold x}}
\def\p{{\bold p}}
\def\k{{\bold k}}
%\def\RP#1{P_{#1\rightarrow#1}}
\def\RP#1{R}
\def\E{E_{\text{classical}}}

\def\Et{$E$--$\tau$}

\let\<=\langle
\let\>=\rangle
\def\bra<#1|{\left<{#1}\right|}
\def\ket|#1>{\left|{#1}\right>}
\def\braket<#1|#2>{\left<{#1}|{#2}\right>}

\def\kpsi(#1){\ket|\psi(#1)>}
\def\bpsi(#1){\bra<\psi(#1)|}

\def\floor#1{\left\lfloor{#1}\right\rfloor}

% High-level markup
\def\eq#1{(\ref{eq:#1})}
\def\fig#1{fig.~\ref{fig:#1}}

% Things to use in the code and descriptions thereof
\def\~{\char'176}

\def\Re{\operatorname{Re}}
\def\Im{\operatorname{Im}}
