\documentclass[10pt]{letter} \usepackage{UPS_letterhead,xcolor,mhchem,mathpazo,ragged2e} \newcommand{\alert}[1]{\textcolor{red}{#1}} \definecolor{darkgreen}{HTML}{009900} \begin{document} \begin{letter}% {To the Editors of the Journal of Chemical Physics} \opening{Dear Editors,} \justifying Please find enclosed our manuscript entitled \textit{``Unphysical Discontinuities, Intruder States and Regularization in GW Methods''}, which we would like you to consider as a Communication in the \textit{Journal of Chemical Physics}. This contribution has never been submitted in total nor in parts to any other journal, and has been seen and approved by both authors. Because of the important new insights provided by this work and its potential impact in quantum chemistry and condensed matter physics, we expect it to be of interest to a wide audience within the chemistry and physics communities. We suggest Timothy Berkelbach, Francesco Evangelista, George Booth, Fabien Bruneval, Patrick Rinke, and Lucia Reining as potential referees. We look forward to hearing from you soon. \closing{Sincerely, the authors.} \end{letter} \end{document}