John’s paper showing how to speed up TDDFT calculations using a semiempirical model as a preconditioner was accepted for publication in The Journal of Chemical Physics. The paper is called “Accelerating molecular property calculations with semiempirical preconditioning”. In the paper, John combines the simplified TDDFT (sTDDFT) semiempirical models with iterative Krylov space methods to speed up ab initio TDDFT calculations by a factor of 1.5-3 with no tradeoff in accuracy.