papers
Publications (14)
cond-mat.str-el2008
A functional of the one-body-reduced density matrix derived from the homogeneous electron gas: Performance for finite systems
N. N. Lathiotakis, N. Helbig, A. Zacarias +1
cond-mat.other2009
Is there a physical meaning of the natural orbitals? Analysis of exactly solvable models
N. Helbig, I. V. Tokatly, A. Rubio
cond-mat.str-el2009
Exact Kohn-Sham potential of strongly correlated finite systems
N. Helbig, I. V. Tokatly, A. Rubio
cond-mat.other2011
Time-dependent density-functional and reduced density-matrix methods for few electrons: Exact versus adiabatic approximations
N. Helbig, J. I. Fuks, I. V. Tokatly +3
cond-mat.mtrl-sci2007
Performance of one-body reduced density matrix functionals for the homogeneous electron gas
N. N. Lathiotakis, N. Helbig, E. K. U. Gross
cond-mat.str-el2007
Discontinuity of the chemical potential in reduced-density-matrix-functional theory
N. Helbig, N. N. Lathiotakis, M. Albrecht +1
cond-mat.str-el2007
Exchange-energy functionals for finite two-dimensional systems
S. Pittalis, E. Rasanen, N. Helbig +1
cond-mat.mtrl-sci2006
Optimized Effective Potential Method in Current-Spin Density Functional Theory
S. Pittalis, S. Kurth, N. Helbig +1
cond-mat.str-el2011
Density functional theory beyond the linear regime: Validating adiabatic LDA
N. Helbig, J. I. Fuks, M. Casula +4
cond-mat.mtrl-sci2008
Discontinuity of the chemical potential in RDMFT for open-shell systems
N. Helbig, N. N. Lathiotakis, E. K. U. Gross
cond-mat.str-el2005
Open shells in reduced-density-matrix-functional theory
N. N. Lathiotakis, N. Helbig, E. K. U. Gross
cond-mat.other2011
Non-linear phenomena in time-dependent density-functional theory: What Rabi physics can teach us
J. I. Fuks, N. Helbig, I. V. Tokatly +1
cond-mat.mtrl-sci2007
First-principles approach to Non-Collinear Magnetism: towards Spin-dynamics
S. Sharma, J. K. Dewhurst, C. Ambrosch-Draxl +6
cond-mat.mtrl-sci2008
Exchange-correlation orbital functionals in current-density-functional theory: Application to a quantum dot in magnetic fields
N. Helbig, S. Kurth, S. Pittalis +2