Results 31 to 40 of about 811,421 (270)

Time-dependent density functional theory beyond the adiabatic local density approximation [PDF]

open access: yes, 1997
In the current density functional theory of linear and nonlinear time-dependent phenomena, the treatment of exchange and correlation beyond the level of the adiabatic local density approximation is shown to lead to the appearance of viscoelastic stresses
A. vom Felde   +24 more
core   +2 more sources

Accurate optical spectra through time-dependent density functional theory based on screening-dependent hybrid functionals

open access: yesPhysical Review Research, 2020
We investigate optical absorption spectra obtained through time-dependent density functional theory (TD-DFT) based on nonempirical hybrid functionals that are designed to correctly reproduce the dielectric function.
Alexey Tal   +3 more
doaj   +1 more source

Time-dependent density functional theory for open spin chains [PDF]

open access: yes, 2011
The application of methods of time-dependent density functional theory (TDDFT) to systems of qubits provided the interesting possibility of simulating an assigned Hamiltonian evolution by means of an auxiliary Hamiltonian having different two-qubit ...
de Falco, Diego, Tamascelli, Dario
core   +2 more sources

Relaxation in Time-Dependent Current-Density-Functional Theory [PDF]

open access: yesPhysical Review Letters, 2006
4 pages, 2 figures, Revtex4.
D'Agosta, Roberto   +1 more
openaire   +3 more sources

Time-dependent density-matrix functional theory for biexcitonic phenomena [PDF]

open access: yes, 2010
We formulate a time-dependent density-matrix functional theory (TDDMFT) approach for higher-order correlation effects like biexcitons in optical processes in solids based on the reduced two-particle density-matrix formalism within the normal orbital ...
Carsten A. Ullrich   +10 more
core   +3 more sources

Tunable plasmons in regular planar arrays of graphene nanoribbons with armchair and zigzag-shaped edges

open access: yesBeilstein Journal of Nanotechnology, 2017
Recent experimental evidence for and the theoretical confirmation of tunable edge plasmons and surface plasmons in graphene nanoribbons have opened up new opportunities to scrutinize the main geometric and conformation factors, which can be used to ...
Cristian Vacacela Gomez   +3 more
doaj   +1 more source

Subsystem real-time time dependent density functional theory [PDF]

open access: yesThe Journal of Chemical Physics, 2015
We present the extension of Frozen Density Embedding (FDE) formulation of subsystem Density Functional Theory (DFT) to real-time Time Dependent Density Functional Theory (rt-TDDFT). FDE is a DFT-in-DFT embedding method that allows to partition a larger Kohn-Sham system into a set of smaller, coupled Kohn-Sham systems.
Alisa Krishtal   +2 more
openaire   +4 more sources

Time-dependent current density functional theory via time-dependent deformation functional theory: A constrained search formulation in the time domain [PDF]

open access: yes, 2009
The logical structure and the basic theorems of time-dependent current density functional theory (TDCDFT) are analyzed and reconsidered from the point of view of recently proposed time-dependent deformation functional theory (TDDefFT).
Tokatly, I. V.
core   +3 more sources

Autoionizing resonances in time-dependent density functional theory [PDF]

open access: yesPhysical Chemistry Chemical Physics, 2009
Autoionizing resonances that arise from the interaction of a bound single-excitation with the continuum can be accurately captured with the presently used approximations in time-dependent density functional theory (TDDFT), but those arising from a bound double excitation cannot.
Krueger, August J., Maitra, Neepa T.
openaire   +3 more sources

Local Control Theory using Trajectory Surface Hopping and Linear-Response Time-Dependent Density Functional Theory

open access: yesCHIMIA, 2013
The implementation of local control theory using nonadiabatic molecular dynamics within the framework of linear-response time-dependent density functional theory is discussed.
Basile F. E. Curchod   +3 more
doaj   +1 more source

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