title: Linked coupled cluster Monte Carlo.
abstract: We consider a new formulation of the stochastic coupled cluster method in terms of the similarity transformed Hamiltonian. We show that improvement in the granularity with which the wavefunction is represented results in a reduction in the critical population required to correctly sample the wavefunction for a range of systems and excitation levels and hence leads to a substantial reduction in the computational cost. This development has the potential to substantially extend the range of the method, enabling it to be used to treat larger systems with excitation levels not easily accessible with conventional deterministic methods.
authors.affiliation: University Chemical Laboratory, Cambridge University, Lensfield Road, Cambridge CB2 1EW, United Kingdom.
authors.forename: R S T
authors.initials: RS
authors.lastname: Franklin
authors.affiliation: Department of Physics, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom.
authors.forename: J S
authors.initials: JS
authors.lastname: Spencer
authors.affiliation: University Chemical Laboratory, Cambridge University, Lensfield Road, Cambridge CB2 1EW, United Kingdom.
authors.forename: A
authors.initials: A
authors.lastname: Zoccante
authors.affiliation: University Chemical Laboratory, Cambridge University, Lensfield Road, Cambridge CB2 1EW, United Kingdom.
authors.forename: A J W
authors.initials: AJ
authors.lastname: Thom