SEARCH Articles Figures Tables Chemistry without potential energy surfaces Highly quasi-degenerate electronic states Energy Transfer Equations in Multi-Component Quasi-Equilibrium Plasma-Chemical Systems Energy and Quasi-Particle Gap in a Cytosine Stack Energy derivatives in quasi-relativistic approaches Energy efficiency quasi-equilibrium processes Free energy quasi-harmonic crystal Quasi-Fermi energy Quasi-Fermi energy levels Quasi-energy Lagrangian Quasi-energy ansatz Quasi-energy spectrum Quasi-energy surface Quasi-energy time-averaged Quasi-energy time-dependent Quasi-equilibrium plasma energy efficiency Quasi-particle energies Self-Energy and Spectral Function for a Core Hole. The Quasi-Particle Picture