Results 21 to 30 of about 242,070 (264)
A checkup on density functional theory [PDF]
Science, 2017 Theoretical Chemistry Density functional theory has extended the reach of computational chemistry to a large range of compounds that were previously intractable to simulation. However, a recent study on a test set of neutral and charged atoms suggested that new functionals have lately been targeting more accurate energy calculations at the expense of ...
openaire +2 more sources
Partition density-functional theory [PDF]
Physical Review A, 2010 Revised version.
Elliott, Peter +3 more
openaire +2 more sources
Current-density functional theory for bosonic superfluids
Journal of Physics Communications, 2023 A finite-temperature current-density functional theory for bosonic superfluids (sf-CDFT) in the thermal equilibrium state is proposed herein. In the sf-CDFT, hydrodynamic physical quantities, such as particle number density, current density, and the ...
Tomoya Aizawa +2 more
doaj +1 more source
Density-functional fluctuation theory of crowds
Nature Communications, 2018 Tools from statistical physics can be used to investigate a large variety of fields ranging from economics to biology. Here the authors first adapt density-functional theory to predict the distributions of crowds in new environments and then validate ...
J. Felipe Méndez-Valderrama +4 more
doaj +1 more source
New 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
Pair density functional theory — a generalized density functional theory [PDF]
Physics Letters A, 1994 Abstract The idea of a pair density functional theory for fermions is presented. Whereas in the conventional Hohenberg-Kohn-Sham theory for the ground state of an interacting N-particle system the particle density is the key quantity and the sum of the kinetic and the interaction energy is a universal functional of this density, here the pair ...
openaire +1 more source
The convexity condition of density-functional theory
The Journal of Chemical Physics, 2023 It has long been postulated that within density-functional theory (DFT), the total energy of a finite electronic system is convex with respect to electron count so that 2Ev[N0] ≤ Ev[N0 − 1] + Ev[N0 + 1]. Using the infinite-separation-limit technique, this Communication proves the convexity condition for any formulation of DFT that is (1) exact for all ...
Andrew C. Burgess +2 more
openaire +3 more sources
Non-Abelian density functional theory [PDF]
Journal of Physics A: Mathematical and General, 1998 1 .eps ...
Rosensteel, G., Dankova, Ts.
openaire +2 more sources
Density Functional Theory Insight into Chemical Vapor Infiltration
Methane, 2023 Chemical Vapor Infiltration (CVI) has proven remarkably successful in producing strong and lightweight ceramic matrix composite materials. This technology has matured to regular industrial use.
Eric A. Walker +2 more
doaj +1 more source
Investigation of structure and vibrational properties of cyclobutane pirimidine dimer [PDF]
Hemijska Industrija, 2013 We performed a theoretical analysis of the structure and vibrational properties of cyclobutane pyrimidine dimer, which is the main product in a photochemical reaction involving two molecules of 1-methylthymine.
Petković Milena M. +2 more
doaj +1 more source