Better late than never: Check out Scott’s paper in JCTC on rank-reduced full CI. RR-FCI is an approximation to full CI that is scalable up to 30 electrons in 30 orbitals by representing the CI vector as a matrix of reduced rank. This work was a collaboration with the Martinez and Koch groups.
Check out Wei-Tao and Scott’s paper on novel GPU-accelerated algorithm for time-dependent complete active space configuration interaction, published in JCTC. It’s fast, and speed aside, time-dependent configuration interaction has many advantages over RT-TDDFT. Nice work guys!