Time-dependent density-functional theory (TDDFT) is a formally exact approach to the time-dependent electronic many-body problem which is widely used for calculating excitation energies. We present a survey of the fundamental framework, practical aspects, and applications of TDDFT. This paper is mainly intended for non-experts (students or researchers in other areas) who would like to learn about the present state of TDDFT without going too deeply into formal details. . . . .
This book is for those who wish to write code in R, as opposed to those who use R mainly for a sequence
of separate, discrete statistical operations, plotting a histogram here, performing a regression analysis there.
The reader’s level of programming background may range from professional to novice to “took a program-
ming course in college,” but the key is that the reader wishes to write R code.
. . . .
