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Ricerca accademica
SCIENTIFIC EXPLANATION AND ATOMIC PHYSICS/
Libro
Libro
MACKINNON, EDWARD M · THE UNIVERSITY OF CHICAGO PRESS · 1982 · ISBN 0-226-50053-5
Materie / parole chiave: MACKINNON, EDWARD M; THE UNIVERSITY OF CHICAGO PRESS; 539.09 M158s
Reversible 2D Phase Transition Driven By an Electric Field: Visualization and Control on the Atomic Scale
Articolo
Articolo
Wortmann, B. et al · American Chemical Society · 2016 · ISSN 1530-6984
We report on a reversible structural phase transition of a two-dimensional system that can be locally induced by an external electric field. Two different structural configurations may coexist within a CO monolayer on Cu...
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Open Access
Minimal Composite Higgs Models at the LHC
Articolo
Articolo
Carena, Marcela et al · Springer · 2014 · ISSN 1029-8479
We consider composite Higgs models where the Higgs is a pseudo-Nambu Goldstone boson arising from the spontaneous breaking of an approximate global symmetry by some underlying strong dynamics. We focus on the SO(5) → S...
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Open Access
LAMMPS - a flexible simulation tool for particle-based materials modeling at the atomic, meso, and continuum scales
Articolo
Articolo
Aidan P. Thompson; Hasan Metin Aktulga; Richard Berger; Dan Bolintineanu; William M. Brown; Paul Crozier; Pieter J. in ’t Veld; Axel Kohlmeyer · Computer Physics Communications · 2021
Since the classical molecular dynamics simulator LAMMPS was released as an open source code in 2004, it has become a widely-used tool for particle-based modeling of materials at length scales ranging from atomic to mesos...
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Review of Particle Physics
Articolo
Articolo
K.A. Olive · Chinese Physics C · 2014
The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,283 new measurements from 899 papers, we list, evaluate, and average measured properties of gauge bosons and the rec...
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Fractional Brownian Motions, Fractional Noises and Applications
Articolo
Articolo
Benoît B. Mandelbrot; John W. Van Ness · SIAM Review · 1968
Previous article Next article Fractional Brownian Motions, Fractional Noises and ApplicationsBenoit B. Mandelbrot and John W. Van NessBenoit B. Mandelbrot and John W. Van Nesshttps://doi.org/10.1137/1010093PDFBibTexSecti...
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General atomic and molecular electronic structure system
Articolo
Articolo
Michael W. Schmidt; Kim K. Baldridge; Jerry A. Boatz; Stephen T. Elbert; Mark S. Gordon; Jan H. Jensen; Shiro Koseki; Nikita Matsunaga · Journal of Computational Chemistry · 1993
Abstract A description of the ab initio quantum chemistry package GAMESS is presented. Chemical systems containing atoms through radon can be treated with wave functions ranging from the simplest closed‐shell case up t...
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Inhibited Spontaneous Emission in Solid-State Physics and Electronics
Articolo
Articolo
Eli Yablonovitch · Physical Review Letters · 1987
It has been recognized for some time that the spontaneous emission by atoms is not necessarily a fixed and immutable property of the coupling between matter and space, but that it can be controlled by modification of the...
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Observation of Bose-Einstein Condensation in a Dilute Atomic Vapor
Articolo
Articolo
Michael H. Anderson; J. R. Ensher; M. R. Matthews; Carl Wieman; Eric Cornell · Science · 1995
A Bose-Einstein condensate was produced in a vapor of rubidium-87 atoms that was confined by magnetic fields and evaporatively cooled. The condensate fraction first appeared near a temperature of 170 nanokelvin and a num...
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Roothaan-Hartree-Fock atomic wavefunctions
Articolo
Articolo
E. Clementi; C. Roetti · Atomic Data and Nuclear Data Tables · 1974
Materie / parole chiave: Hartree–Fock method; Wave function; Atomic physics; Physics; Chemistry; Quantum mechanics
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<i>Ab initio</i> effective core potentials for molecular calculations. Potentials for main group elements Na to Bi
Articolo
Articolo
Willard R. Wadt; P. Jeffrey Hay · The Journal of Chemical Physics · 1985
A consistent set of ab initio effective core potentials (ECP) has been generated for the main group elements from Na to Bi using the procedure originally developed by Kahn. The ECP’s are derived from all-electron numer...
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<i>Ab initio</i> effective core potentials for molecular calculations. Potentials for the transition metal atoms Sc to Hg
Articolo
Articolo
P. Jeffrey Hay; Willard R. Wadt · The Journal of Chemical Physics · 1985
Ab initio effective core potentials (ECP’s) have been generated to replace the Coulomb, exchange, and core-orthogonality effects of the chemically inert core electron in the transition metal atoms Sc to Hg. For the sec...
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Accurate Molecular Van Der Waals Interactions from Ground-State Electron Density and Free-Atom Reference Data
Articolo
Articolo
Alexandre Tkatchenko; Matthias Scheffler · Physical Review Letters · 2009
We present a parameter-free method for an accurate determination of long-range van der Waals interactions from mean-field electronic structure calculations. Our method relies on the summation of interatomic C6 coefficien...
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Contracted Gaussian basis sets for molecular calculations. I. Second row atoms, <i>Z</i>=11–18
Articolo
Articolo
A. D. McLean; G. S. Chandler · The Journal of Chemical Physics · 1980
Contracted Gaussian basis sets for molecular calculations are derived from uncontracted (12,8) and (12,9) sets for the neutral second row atoms, Z=11–18, and for the negative ions P−, S−, and Cl−. Calculations on...
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Density-functional method for nonequilibrium electron transport
Articolo
Articolo
Mads Brandbyge; José-Luís Mozos; Pablo Ordejón; Jeremy Taylor; Kurt Stokbro · Physical review. B, Condensed matter · 2002
We describe an ab initio method for calculating the electronic structure, electronic transport, and forces acting on the atoms, for atomic scale systems connected to semi-infinite electrodes and with an applied voltage b...
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Density-functional thermochemistry. III. The role of exact exchange
Articolo
Articolo
Axel D. Becke · The Journal of Chemical Physics · 1993
Despite the remarkable thermochemical accuracy of Kohn–Sham density-functional theories with gradient corrections for exchange-correlation [see, for example, A. D. Becke, J. Chem. Phys. 96, 2155 (1992)], we believe tha...
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Electron affinities of the first-row atoms revisited. Systematic basis sets and wave functions
Articolo
Articolo
Rick A. Kendall; Thom H. Dunning; Robert J. Harrison · The Journal of Chemical Physics · 1992
The calculation of accurate electron affinities (EAs) of atomic or molecular species is one of the most challenging tasks in quantum chemistry. We describe a reliable procedure for calculating the electron affinity of an...
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Fully optimized contracted Gaussian basis sets for atoms Li to Kr
Articolo
Articolo
Ansgar Schäfer; Hans W. Horn; Reinhart Ahlrichs · The Journal of Chemical Physics · 1992
Various contracted Gaussian basis sets for atoms up to Kr are presented which have been determined by optimizing atomic self-consistent field ground state energies with respect to all basis set parameters, i.e., orbital ...
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Fully optimized contracted Gaussian basis sets of triple zeta valence quality for atoms Li to Kr
Articolo
Articolo
Ansgar Schäfer; Christian Huber; Reinhart Ahlrichs · The Journal of Chemical Physics · 1994
Contracted Gaussian basis sets of triple zeta valence (TZV) quality are presented for Li to Kr. The TZV bases are characterized by typically including a single contraction to describe inner shells and three basis functio...
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Gaussian basis sets for use in correlated molecular calculations. I. The atoms boron through neon and hydrogen
Articolo
Articolo
Thom H. Dunning · The Journal of Chemical Physics · 1989
In the past, basis sets for use in correlated molecular calculations have largely been taken from single configuration calculations. Recently, Almlöf, Taylor, and co-workers have found that basis sets of natural orbital...
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Self-Consistent Molecular-Orbital Methods. IX. An Extended Gaussian-Type Basis for Molecular-Orbital Studies of Organic Molecules
Articolo
Articolo
R. Ditchfield; Warren J. Hehre; John A. Pople · The Journal of Chemical Physics · 1971
An extended basis set of atomic functions expressed as fixed linear combinations of Gaussian functions is presented for hydrogen and the first-row atoms carbon to fluorine. In this set, described as 4–31 G, each inner ...
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<i>Ab initio</i> effective core potentials for molecular calculations. Potentials for K to Au including the outermost core orbitals
Articolo
Articolo
P. Jeffrey Hay; Willard R. Wadt · The Journal of Chemical Physics · 1985
Ab initio effective core potentials (ECP’s) have been generated to replace the innermost core electron for third-row (K–Au), fourth-row (Rb–Ag), and fifth-row (Cs–Au) atoms. The outermost core orbitals—correspo...
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A Theory of Sensitized Luminescence in Solids
Articolo
Articolo
D. L. Dexter · The Journal of Chemical Physics · 1953
The term ``sensitized luminescence'' in crystalline phosphors refers to the phenomenon whereby an impurity (activator, or emitter) is enabled to luminesce upon the absorption of light in a different type of center (sensi...
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