Dynamics can also be carried out with several analytical models available in Newton-X, including the 1D models by Tully, the 1D Double arch, the 1D Nikitin Hamiltonian, the 2D Conical intersection, the N-D Spin-Boson Hamiltonian, and several complex-valued 1D models for CS-FSSH. DFT/MRCI can be used for spectrum simulations but not for dynamics due to the lack of analytical energy gradients in that method. Phosphorescence spectra can be simulated using Newton-X interfaced to PySOC to obtain spin-orbit couplings, and PySOC calling Gaussian for TDDFT calculations. Photoionization cross sections from EzDyson 99 can be used to simulate photoionization spectra.