The ground state correlation energy of the random phase approximation from a ring coupled cluster doubles approach
Year: 2008
Type: article
Abstract: We present an analytic proof demonstrating the equivalence between the random phase approximation (RPA) to the ground state correlation energy and a ring-diagram simplification of the coupled cluster doubles (CCD) equations. In the CCD framework, the RPA equations can be solved in O(N(4)) computational effort, where N is proportional to the number of basis functions.
Source: The Journal of Chemical Physics
DOI: 10.1063/1.3043729
Institution: Rice University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2023075769