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Controlling Arbitrary Observables in Correlated Many-body Systems
Gerard McCaul, Christopher Orthodoxou, Kurt Jacobs +2
Here we present an expanded analysis of a model for the manipulation and control of observables in a strongly correlated, many-body system, which was first presented in [McCaul et…
Efficient and Stochastic Multireference Perturbation Theory for Large Active Spaces within a Full Configuration Interaction Quantum Monte Carlo Framework
Robert J. Anderson, Toru Shiozaki, George H. Booth
Full Configuration Interaction Quantum Monte Carlo (FCIQMC) has been effectively applied to very large configuration interaction (CI) problems, and was recently adapted for use as…
A wave function perspective and efficient truncation of renormalised second-order perturbation theory
Oliver J. Backhouse, Max Nusspickel, George H. Booth
We present an approach to renormalized second-order Green's function perturbation theory (GF2) which avoids all dependency on continuous variables, grids or explicit Green's functi…
Driven Imposters: Controlling Expectations in Many-Body Systems
Gerard McCaul, Christopher Orthodoxou, Kurt Jacobs +2
We present a framework to control and track the observables of a general solid state system driven by an incident laser field. The main result is a non-linear equation of motion fo…
Direct comparison of many-body methods for realistic electronic Hamiltonians
Kiel T. Williams, Yuan Yao, Jia Li +22
A large collaboration carefully benchmarks 20 first principles many-body electronic structure methods on a test set of 7 transition metal atoms, and their ions and monoxides. Good…
Frequency-dependent and algebraic bath states for a Dynamical Mean-Field Theory with compact support
Max Nusspickel, George H. Booth
We demonstrate an algebraic construction of frequency-dependent bath orbitals which can be used in a robust and rigorously self-consistent DMFT-like embedding method, here called $…