\documentclass[a4paper]{letter}

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\addbibresource{frsb_kac-rice.bib}

\signature{
  \vspace{-6\medskipamount}
  \smallskip
  Jaron Kent-Dobias \& Jorge Kurchan
}

\address{
  Laboratoire de Physique\\
  Ecole Normale Sup\'erieure\\
  24 rue Lhomond\\ 
  75005 Paris
}

\begin{document}
\begin{letter}{
  Physical Review Letters\\
  1 Research Road\\
  Ridge, NY 11961
}

\opening{To the editors of PRL,}

We wish to appeal the decision concerning our manuscript \textit{Unveiling the complexity of hierarchical energy landscapes}
which we submitted to PRL.

As we mentioned in the reply to the referees, this is a problem that has
been open for 42 years,
and several related contributions have been published since in PRL.

Our solution for the first time gives the full picture of the structure
of valleys in a complex landscape, finally rendering the ``state counting''
(Kac-Rice) approach -- used in several hundred papers --
compatible with the Parisi solution of equilibrium. As a byproduct, the
structure of near-equilibrium saddles is for the first time transparent.

The reason we are keen to publish in PRL is clear:   PRL gives an
``official'' sense of closure,
in a way no other journal does. We believe our article deserves it.

\closing{Sincerely,}

\vspace{1em}

\end{letter}

\end{document}
