Results 11 to 20 of about 25,810,607 (294)

Computational complexity of time-dependent density functional theory

open access: yesNew Journal of Physics, 2014
Time-dependent density functional theory (TDDFT) is rapidly emerging as a premier method for solving dynamical many-body problems in physics and chemistry. The mathematical foundations of TDDFT are established through the formal existence of a fictitious
J D Whitfield   +4 more
doaj   +8 more sources

Time-dependent density-functional theory for superfluids [PDF]

open access: yesEurophysics Letters (EPL), 2001
A density-functional theory is established for inhomogeneous superfluids at finite temperature, subject to time-dependent external fields in isothermal conditions.
M. P. Tosi   +3 more
core   +4 more sources

Density-potential mapping in time-dependent density-functional theory [PDF]

open access: yesPhysical Review A, 2010
The key questions of uniqueness and existence in time-dependent density-functional theory are usually formulated only for potentials and densities that are analytic in time.
K Burke   +7 more
core   +5 more sources

Density-functional theory for time-dependent systems

open access: yesPhysical Review A, 1987
The time-dependent density-functional theory of Runge and Gross [Phys. Rev. Lett. 52, 997 (1984)] is reexamined on the basis of its limitations, and the criticisms raised by Xu and Rajagopal [Phys. Rev.
Dhara, Asish K.   +3 more
core   +3 more sources

Time-Dependent Multilevel Density Functional Theory

open access: yesJournal of Chemical Theory and Computation
We present a novel three-layer approach based on multilevel density functional theory (MLDFT) and polarizable molecular mechanics to simulate the electronic excitations of chemical systems embedded in an external environment within the time-dependent DFT
Marco Scavino (9993130)   +2 more
core   +5 more sources

KEY CONCEPTS IN TIME-DEPENDENT DENSITY-FUNCTIONAL THEORY [PDF]

open access: yesInternational Journal of Modern Physics B, 2001
We give an overview of the underlying concepts of time-dependent density-functional theory. The basic relations between densities, potentials and initial states, for time-dependent many-body systems are discussed.
Robert Van Leeuwen, Leeuwen, R.van
core   +4 more sources

Cavity quantum-electrodynamical time-dependent density functional theory within Gaussian atomic basis. II. Analytic energy gradient. [PDF]

open access: yesJ Chem Phys, 2022
Following the formulation of cavity quantum electrodynamical time-dependent density functional theory (cQED-TDDFT) models [Flick et al., ACS Photonics 6, 2757-2778 (2019); Yang et al., J. Chem. Phys. 155, 064107 (2021)], here we report the derivation and
Yang J   +7 more
europepmc   +3 more sources

General excitations in time-dependent density functional theory

open access: yesThe Journal of Chemical Physics, 2007
A general framework within time-dependent density functional theory is presented for the calculation of excitations to states of arbitrary multiplicity in molecular systems with a non-singlet ground state.
Rinkevicius, Zilvinas,   +3 more
core   +3 more sources

Modeling Intermolecular Coulombic Decay with Non-Hermitian Real-Time Time-Dependent Density Functional Theory. [PDF]

open access: yesJ Phys Chem Lett
In this work, we investigate the capability of using real-time time-dependent density functional theory (RT-TDDFT) in conjunction with a complex absorbing potential (CAP) to simulate the intermolecular Coulombic decay (ICD) processes following the ...
Wang YS   +4 more
europepmc   +3 more sources

Density-Matrix Coupled Time-Dependent Exchange-Correlation Functional Approximations

open access: yes, 2019
We present a new class of nonadiabatic approximations in time-dependent density functional theory derived from an exact expression for the time-dependent exchange-correlation potential. The approximations reproduce dynamical step and peak features in the
Neepa T. Maitra (6333899)   +1 more
core   +5 more sources

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