Recent advances in reduced density matrix functional theory (RDMFT) and linear response
time-dependent reduced density matrix functional theory (TD-RDMFT) are reviewed. In …

Some of the most spectacular failures of density-functional and Hartree–Fock theories are
related to an incorrect description of the so-called static electron correlation. Motivated by …

We initiate the recently proposed $ w $-ensemble one-particle reduced density matrix
functional theory ($ w $-RDMFT) by deriving the first functional approximations and illustrate …

Reduced density matrix functional theory (RDMFT), a promising direction in the problem of
describing strongly correlated systems, is currently limited by its explicit dependence on …

One-body reduced density matrix functional theory provides an alternative to density
functional theory, which is able to treat static correlation while keeping a relatively low …

Currently, there is a growing interest in the development of a new hierarchy of methods
based on the concept of seniority, which has been introduced quite recently in quantum …

The present study further explores the concept of the seniority number (Ω) by examining
different configuration interaction (CI) truncation strategies in generating compact wave …

As a new approach to efficiently describe correlation effects in the relativistic quantum world
we propose to consider reduced density matrix functional theory, where the key quantity is …

Perturbative analysis of the functional U [n, ψ] that yields the correlation component U of the
electron–electron repulsion energy in terms of the vectors ψ (1) and n of the natural …

To address the convergence issues in the natural occupation optimization of reduced
density matrix functional theory (RDMFT), we recently proposed the explicit-by-implicit (EBI) …