Periodicity of the time-dependent Kohn-Sham equation and the Floquet theorem
Periodicity of the time-dependent Kohn-Sham equation and the Floquet theorem
The Floquet theorem allows one to reformulate periodic time-dependent problems such as the interaction of a many-body system with a laser field in terms of time-independent, field-dressed states, also known as Floquet states. If this was possible for density-functional theory as well, one could reduce in such cases time-dependent density-functional …