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researcher

T. Helgaker

3 papers hereh-index 8231k citations399 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • middle author2
  • last author1

Across the 3 of 3 papers where every author was matched, so the position is known.

fields
  • physics.chem-ph3

identity via Semantic Scholar / OpenAlex

most citedCalculating excitation energies by extrapolation along adiabatic connections

14 citations · 14 across the 3 of their papers we have counts for

collaborators

3 papers

physics.chem-ph2015

Ground-state densities from the Rayleigh--Ritz variation principle and from density-functional theory

Simen Kvaal, Trygve Helgaker

The relationship between the densities of ground-state wave functions (i.e., the minimizers of the Rayleigh--Ritz (RR) variation principle) and the ground-state densities in densit…

physics.chem-ph2015

Current Density-Functional Theory using meta-Generalized Gradient Exchange--Correlation Functionals

James W. Furness, Joachim Verbeke, Erik I. Tellgren +4

We present the self-consistent implementation of current-dependent (hybrid) meta generalized gradient approximation (mGGA) density functionals using London atomic orbitals. A previ…

physics.chem-ph2015★ 14 cited

Calculating excitation energies by extrapolation along adiabatic connections

Elisa Rebolini, Julien Toulouse, Andrew M. Teale +2

In this paper, an alternative method to range-separated linear-response time-dependent density-functional theory and perturbation theory is proposed to improve the estimation of th…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.