This article summarizes technical advances contained in the fifth major release of the Q-
Chem quantum chemistry program package, covering developments since 2015. A …

While a complete understanding of organic semiconductor (OSC) design principles remains
elusive, computational methods─ ranging from techniques based in classical and quantum …

Time‐Dependent Density Functional Theory (TD‐DFT) has become the most widely‐used
theoretical approach to simulate the optical properties of both organic and inorganic …

This work introduces the PYXAID program, developed for non-adiabatic molecular dynamics
simulations in condensed matter systems. By applying the classical path approximation to …

We review state-of-the-art electronic structure methods based both on wave function theory
(WFT) and density functional theory (DFT). Strengths and limitations of both the wave …

Excitation gaps are of considerable significance in electronic structure theory. Two different
gaps are of particular interest. The fundamental gap is defined by charged excitations, as the …

We present the GW 100 set. GW 100 is a benchmark set of the ionization potentials and
electron affinities of 100 molecules computed with the GW method using three independent …

Conspectus Density functional theory (DFT) and its time-dependent extension (TD-DFT) are
powerful tools enabling the theoretical prediction of the ground-and excited-state properties …

We review the many-body Green's function Bethe–Salpeter equation (BSE) formalism that is
rapidly gaining importance for the study of the optical properties of molecular organic …

Accurate prediction of fundamental band gaps of crystalline solid-state systems entirely
within density functional theory is a long-standing challenge. Here, we present a simple and …