deletions | additions       diff --git a/SMMP.md b/SMMP.md  index f8cfcec..acad3e1 100644  --- a/SMMP.md  +++ b/SMMP.md 
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1. High accuracy means coupled cluster (CC) wave functions  2. Systems for which CC is an option are limited by its polynomial scaling  3. It is possible to reduce the scaling, _e.g._ by means of local approaches to the electron correlation problem,  but this has been proven to not be as effective for molecular properties as for energies(cite Daniel's work here!)  * Devise the appropriate stochastic approach to the solution of response equations  1. We want the stochastic approach because it's (supposedly) embarassingly parallel. 
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State of the art:  * QMC:  *  Recent reviews on QMC approaches: \cite{Dubeck__2016} \cite{Austin_2012}, \cite{Towler_2006} and \cite{Foulkes_2001} * Self-Healing QMC * Auxiliary Field QMC * Fermion QMC * FCIQMC * Stochastic Coupled Cluster: Thom introduces the FCIQMC-like stochastic algorithm for solving the CC equations \cite{Thom_2010} The methods leverages the stochastic sampling strategies of the FCI wave function in a discrete Fock space first proposed by Alavi _et al._\cite{Booth_2009} * Linked Coupled Cluster Monte Carlo: the stochastic algorithm for the solution of the CC equations in the linked (term-by-term size-extensive) form \cite{Franklin_2016} * Initiator approximation: the same group proposes the initiator approximation for the CCMC algorithm \cite{Spencer_2016} * Stochastic Møller-Plesset \cite{Thom_2007} * Local approaches to QMC \cite{Manten_2003}, \cite{Williamson_2001}  * Response theory:  * Most recent review on wave function-based response theory \cite{Helgaker_2012}  * Foundational work \cite{Olsen_1985}, \cite{Christiansen_1998}, \cite{Paw_owski_2015}, \cite{Coriani_2016}  * CC response theory  * Local approaches to CC  * Local approaches to CC response theory  Problems to address: