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cond-mat.str-el2011★ 29 cited
On the Kirzhnits gradient expansion in two dimensions
A. Putaja, E. Rasanen, R. van Leeuwen +2
We derive the semiclassical Kirzhnits expansion of the D-dimensional one-particle density matrix up to the second order in . We focus on the two-dimensional (2D) case and sh…
cond-mat.str-el2011★ 7 cited
Constraints of reduced density-matrix functional theory for the two-dimensional homogeneous electron gas
A. Putaja, E. Rasanen
Reduced density-matrix functional theory (RDMFT) has become an appealing alternative to density-functional theory to describe electronic properties of highly-correlated systems. He…