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method of density functional

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  • Density functional theory — Electronic structure methods Tight binding Nearly free electron model Hartree–Fock method Modern valence bond Generalized valence bond Møller–Plesset perturbation theory …   Wikipedia

  • Time-dependent density functional theory — (TDDFT) is a quantum mechanical method used inphysics and chemistry to investigate the proprieties of many body systems beyond the ground statestructure. It s an extension of density functional theory (DFT) to the time dependent domain asa method …   Wikipedia

  • Amsterdam Density Functional — (ADF) is a program for first principles electronic structure calculations that makes use of density functional theory. [ Computational Chemistry , David Young, Wiley Interscience, 2001. Appendix A. A.2.1 pg 332, ADF ] ADF was first developed in… …   Wikipedia

  • Density matrix — Mixed state redirects here. For the psychiatric condition, see Mixed state (psychiatry). In quantum mechanics, a density matrix is a self adjoint (or Hermitian) positive semidefinite matrix (possibly infinite dimensional) of trace one, that… …   Wikipedia

  • Local-density approximation — The local density approximation (LDA) is an approximation of the exchange correlation (XC) energy functional in density functional theory (DFT) by taking the XC energy of an electron in a homogeneous electron gas of a density equal to the density …   Wikipedia

  • Hybrid functional — A hybrid functional is an exchange correlation functional used in density functional theory (DFT) that incorporates a portion of exact exchange from Hartree Fock theory with exchange and correlation from other sources ( ab initio , such as LDA,… …   Wikipedia

  • Classical-map hypernetted-chain method — For the Canadian radio station, see CHNC FM . The classical map hypernetted chain method (CHNC method) is a method used in many body theoretical physics for interacting uniform electron liquids in two and three dimensions, and for interacting… …   Wikipedia

  • Fast Multipole Method — The Fast Multipole Method (FMM) is a mathematical technique that was developed to speed up the calculation of long ranged forces in the n body problem. It does this by expanding the system Green s function using a multipole expansion, which… …   Wikipedia

  • Car-Parrinello method — The Car Parrinello method is a type of ab initio (first principles) molecular dynamics, usually employing periodic boundary conditions, planewave basis sets, and DFT.In contrast to Born Oppenheimer molecular dynamics wherein the nuclear (ions)… …   Wikipedia

  • Local density of states — (LDOS) is a physical quantity that describes the density of states, but space resolved. In materials science, this term is useful when interpreting the data from STM, since this method is capable of imaging electron densities of states with… …   Wikipedia

  • Harris functional — In computational condensed matter physics, the Harris energy functional is a non self consistent approximation to Kohn Sham density functional theory. It gives the energy of a combined system as a function of the electronic densities of the… …   Wikipedia

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