118 citations · 443 across the 8 of their papers we have counts for
Showing cond-mat.str-elShow all
3 papers · 1 filter
cond-mat.str-el2009★ 32 cited
Gaussian approximations for the exchange-energy functional of current-carrying states: Applications to two-dimensional systems
S. Pittalis, E. Rasanen, E. K. U. Gross
Electronic structure calculations are routinely carried out within the framework of density-functional theory, often with great success. For electrons in reduced dimensions, howeve…
cond-mat.str-el2009★ 43 cited
Lower Bounds on the Exchange-Correlation Energy in Reduced Dimensions
E. Rasanen, S. Pittalis, K. Capelle +1
Bounds on the exchange-correlation energy of many-electron systems are derived and tested. By using universal scaling properties of the electron-electron interaction, we obtain the…
cond-mat.str-el2008
Electronic exchange in quantum rings
E. Rasanen, S. Pittalis, C. R. Proetto +1
Quantum rings can be characterized by a specific radius and ring width. For this rich class of physical systems, an accurate approximation for the exchange-hole potential and thus…