Functionals: Meta Generalized Gradient Approximation
A meta-GGA functional uses the Laplacian (second derivative) of the density or the kinetic
energy density in addition to the density and the magnitude of the gradient of the density.
- TPSS:
Climbing the Density Functional Ladder: Nonempirical Meta-Generalized Gradient
Approximation Designed for Molecules and Solids
J. Tao, J. P. Perdew, V. N. Staroverov, and G. E. Scuseria
Phys. Rev. Lett. 91 146401 (2003) (subscription needed).
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