19 citations · 35 across the 2 of their papers we have counts for
5 papers
Fluctuating parts of nuclear ground state correlation energies
B. G. Carlsson, J. Toivanen, U. von Barth
Background: Heavy atomic nuclei are often described using the Hartree-Fock-Bogoliubov (HFB) method. In principle, this approach takes into account Pauli effects and pairing correla…
Towards non-local density functionals by explicit modeling of the exchange-correlation hole in inhomogeneous systems
Klaas J. H. Giesbertz, Robert van Leeuwen, Ulf von Barth
We put forward new approach for the development of a non-local density functional by a direct modeling of the shape of exchange-correlation (xc) hole in inhomogeneous systems. The…
Some open questions in TDDFT: Clues from Lattice Models and Kadanoff-Baym Dynamics
Claudio Verdozzi, Daniel Karlsson, Marc Puig von Friesen +2
Two aspects of TDDFT, the linear response approach and the adiabatic local density approximation, are examined from the perspective of lattice models. To this end, we review the DF…
Correlation energy functional and potential from time-dependent exact-exchange theory
Maria Hellgren, Ulf von Barth
In this work we have studied a new functional for the correlation energy obtained from the exact-exchange (EXX) approximation within time-dependent density functional theory (TDDFT…
Exact-exchange kernel of time-dependent density functional theory: Frequency dependence and photoabsorption spectra of atoms
Maria Hellgren, Ulf von Barth
In this work we have calculated excitation energies and photoionization cross sections of Be and Ne in the exact-exchange (EXX) approximation of time-dependent density functional t…