Static and time-dependent density-functional theory. Hohenberg and Kohn (1964): All physical observables of a static many-body system are, in principle, functionals ...
The TDSE describes the time evolution of a many-body state ... assume fall-off of n0 rapid enough that surface-integral 0. integrand 0, so if integral 0, then ...
... i.e. diffusion, is much less because of collisions between molecules and their random direction. ... the carbon-13 isotopes weigh more than the carbon-12 ...