42 lines
2.2 KiB
TeX
42 lines
2.2 KiB
TeX
\documentclass[10pt]{letter}
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\usepackage{UPS_letterhead,xcolor,mhchem,mathpazo,ragged2e,}
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\newcommand{\alert}[1]{\textcolor{red}{#1}}
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\definecolor{darkgreen}{HTML}{009900}
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\usepackage[
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colorlinks=true,
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citecolor=blue,
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breaklinks=true
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]{hyperref}
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\urlstyle{same}
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\begin{document}
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\begin{letter}%
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{To the Editors of the Journal of Chemical Physics}
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\opening{Dear Editors,}
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\justifying
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Please find enclosed our manuscript entitled \textit{``Connections between many-body perturbation and coupled-cluster theories''}, which we would like you to consider as a Communication in the \textit{Journal of Chemical Physics}.
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This contribution has never been submitted in total nor in parts to any other journal, and has been seen and approved by all authors.
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In the present contribution, following the works of Scuseria \textit{et al.} [\href{http://dx.doi.org/10.1063/1.3043729}{J.~Chem.~Phys.~\textbf{129}, 231101 (2008)}] and Berkelbach [\href{https://doi.org/10.1063/1.5032314}{J.~Chem.~Phys.~\textbf{149}, 041103 (2018)}], we prove exact equivalences between the Bethe-Salpeter equation (BSE) formalism combined with the $GW$ approximation from many-body perturbation theory and coupled-cluster (CC) theory at the ground- and excited-state levels.
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More specifically, we show how to recast $GW$ and BSE as non-linear CC-like equations that can be solved with the usual CC machinery with the same computational cost.
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The present work provides a clear path for the computation of ground- and excited-state properties (such as nuclear gradients) within the BSE@$GW$ framework that has been shown to be highly successful to compute low-lying excited states in molecular systems with a very attractive accuracy/cost ratio.
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It also broaden the applicability of Green's function methods in the electronic structure community and beyond.
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Because of the novelty of 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.
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We suggest Timothy Berkelbach, Gustavo Scuseria, George Booth, Stefano Evangelista, Xavier Blase, and Weitao Yang as potential referees.
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We look forward to hearing from you soon.
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\closing{Sincerely, the authors.}
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\end{letter}
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\end{document}
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