We will now extend this idea to state-specific solvation of an excited-state wave function |Ψ k , starting with an equilibrium approach in which the polarization of the medium is fully relaxed with respect to the excited-state charge distribution, using the solvent's static dielectric constant (ε 0 ) to represent all possible polarization mechanisms for the medium. This approach should be valid in the long-time limit after excitation, whereas the case of a sudden (vertical) excitation requires a nonequilibrium approach, as developed in Section II C. For equilibrium solvation on excited state k, one must solve the statespecific Schrödinger equation