Results 21 to 30 of about 393,647 (311)

Multi-State Density Functional Theory for Ground and Excited States

open access: yes, 2021
We report a rigorous formulation of multi-state density functional theory (MSDFT) that extends the Kohn-Sham (KS) energy functional for the ground state to a Hamiltonian matrix functional H[D] of the density matrix D in the space spanned by the lowest N ...
Jiali, Gao, Yangyi, Lu
core   +1 more source

Solitons in Nuclear Time-Dependent Density Functional Theory

open access: yesFrontiers in Physics, 2020
The soliton existence in sub-atomic many-nucleon systems will be discussed. In many nucleon dynamics represented by the nuclear time-dependent density functional formalism, much attention is paid to energy and mass dependence of the soliton existence. In
Yoritaka Iwata
doaj   +1 more source

Relativistic density functional theory in nuclear physics

open access: yesAAPPS Bulletin, 2021
Over the past decades, the relativistic density functional theory has been greatly developed and widely applied to investigate a variety of nuclear phenomena.
Jie Meng, Pengwei Zhao
doaj   +1 more source

Localized Active Space Pair-Density Functional Theory

open access: yes, 2021
Accurate quantum chemical methods for the prediction of spin-state energy gaps for strongly correlated systems are computationally expensive and scale poorly with the size of the system.
Matthew R., Hermes   +4 more
core   +1 more source

A Density Functional Theory for the Average Electron Energy

open access: yes, 2022
A formally exact density functional theory (DFT) determination of the average electron energy is presented. Our theory, which is based on a different accounting of energy functional terms, partially solves one well known downside of conventional Kohn ...
Stefano, Racioppi   +3 more
core   +1 more source

Density Matrix Embedding Using Multiconfiguration Pair-Density Functional Theory

open access: yes, 2023
We present a quantum embedding method for ground and excited states of extended systems that uses multiconfiguration pair-density functional theory (MC-PDFT) with densities provided by periodic density matrix embedding theory (pDMET).
Matthew , Hermes   +2 more
core   +1 more source

Existence and convergence results for the Galerkin approximation of an electronic density functional [PDF]

open access: yes, 2010
We formulate and analyze a model for the study of finite clusters of atoms or localized defects in infinite crystals based on orbital-free density functional theory.
CHRISTOPH ORTNER   +8 more
core   +1 more source

Density functional theory of electrowetting [PDF]

open access: yesPhysical Review E, 2014
The phenomenon of electrowetting, i.e., the dependence of the macroscopic contact angle of a fluid on the electrostatic potential of the substrate, is analyzed in terms of the density functional theory of wetting. It is shown that electrowetting is not an electrocapillarity effect, i.e., it cannot be consistently understood in terms of the variation of
Bier, M., Ibagon, I.
openaire   +4 more sources

Repulsively diverging gradient of the density functional in the reduced density matrix functional theory

open access: yesNew Journal of Physics, 2021
The reduced density matrix functional theory (RDMFT) is a remarkable tool for studying properties of ground states of strongly interacting quantum many body systems.
Tomasz Maciążek
doaj   +1 more source

Density functional theory: An introduction [PDF]

open access: yesAmerican Journal of Physics, 2000
Density functional theory (DFT) is one of the most widely used methods for ab initio calculations of the structure of atoms, molecules, crystals, surfaces, and their interactions. Unfortunately, the customary introduction to DFT is often considered too lengthy to be included in various curricula.
Argaman, Nathan, Makov, Guy
openaire   +2 more sources

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