6533b82bfe1ef96bd128cdbf
RESEARCH PRODUCT
Colle-Salvetti-type local density functional for the exchange-correlation energy in two dimensions
Serpil SakirogluSerpil SakirogluEsa Räsänensubject
PhysicsElectronic correlationStrongly Correlated Electrons (cond-mat.str-el)Reference data (financial markets)FOS: Physical sciencesType (model theory)Atomic and Molecular Physics and OpticsCondensed Matter - Strongly Correlated ElectronsQuantum dotQuantum mechanicsDensity functional theorySum rule in quantum mechanicsPhysics::Chemical PhysicsWave functionFermi gasdescription
We derive an approximate local density functional for the exchange-correlation energy to be used in density-functional calculations of two-dimensional systems. In the derivation we employ the Colle-Salvetti wave function within the scheme of Salvetti and Montagnani [Phys. Rev. A 63, 052109 (2001)] to satisfy the sum rule for the exchange-correlation hole. We apply the functional for the two-dimensional homogeneous electron gas as well as to a set of quantum dots and find a very good agreement with exact reference data.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-06-21 |