Orbital-free kinetic energy functionals can be constructed by writing the one-electron reduced density matrix as an approximate functional of the ground-state electron density. In order to utilize this strategy, one needs to impose appropriate Nrepresentability constraints upon the model 1-electron reduced density matrix. We present several constraints of this sort here, themost powerful of which is based upon the March-Santamaria identity for the local kinetic energy.
CITATION STYLE
Chakraborty, D., Cuevas-Saavedra, R., & Ayers, P. W. (2018). Kinetic energy density functionals from models for the one-electron reduced density matrix. In Many-body Approaches at Different Scales: A Tribute to Norman H. March on the Occasion of his 90th Birthday (pp. 199–208). Springer International Publishing. https://doi.org/10.1007/978-3-319-72374-7_17
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