Results 1 to 10 of about 1,799,307 (309)
Classical kinetic energy, quantum fluctuation terms and kinetic-energy functionals [PDF]
Theor Chem Acc 118, 407-415 (2007), 2006 We employ a recently formulated dequantization procedure to obtain an exact expression for the kinetic energy which is applicable to all kinetic-energy functionals. We express the kinetic energy of an N-electron system as the sum of an N-electron classical kinetic energy and an N-electron purely quantum kinetic energy arising from the quantum ...
Ian P. Hamilton +2 more
arxiv +7 more sources
Kinetic Energy Density Study of Some Representative Semilocal Kinetic Energy Functionals [PDF]
The Journal of Chemical Physics 127, 144109 (2007), 2007 There is a number of explicit kinetic energy density functionals for non-interacting electron systems that are obtained in terms of the electron density and its derivatives. These semilocal functionals have been widely used in the literature. In this work we present a comparative study of the kinetic energy density of these semilocal functionals ...
J. E. Alvarellos, David García-Aldea
arxiv +8 more sources
Kinetic energy density functionals from the Airy gas, with an application to the atomization kinetic energies of molecules [PDF]
Phys. Rev. B 79, 115117 (2009), 2009 We construct and study several semilocal density functional approximations for the positive Kohn-Sham kinetic energy density. These functionals fit the kinetic energy density of the Airy gas and they can be accurate for integrated kinetic energies of atoms, molecules, jellium clusters and jellium surfaces.
Adrienn Ruzsinszky +10 more
arxiv +3 more sources
Typical Fragment Kinetic Energy Assessment Based on Acoustic Emission Technology [PDF]
Sensors, 2022 Fragment kinetic energy is an important parameter to characterize the damage power of fragments. In this study, an acoustic emission technology-based method to evaluate fragment kinetic energy is proposed.
Fei Shang, Liangquan Wang
doaj +2 more sources
Kinetic energy driven superconductivity, the origin of the Meissner effect, and the reductionist frontier [PDF]
Int. J. Mod. Phys. B 25, 1173 (2011), 2011 Is superconductivity associated with a lowering or an increase of the kinetic energy of the charge carriers? Conventional BCS theory predicts that the kinetic energy of carriers increases in the transition from the normal to the superconducting state.
Bjorken J. D. +11 more
arxiv +3 more sources
Kinetic Energy Transport in Rayleigh--Bénard Convection [PDF]
, 2014 The kinetic energy balance in Rayleigh--B\'{e}nard convection is investigated for the Prandtl number range $0.01\le Pr \le 150$ and for fixed Rayleigh number $Ra=5\cdot10^{6}$. The kinetic energy balance is divided into a dissipation, a production and a flux term.
Hansen, Ulli +4 more
arxiv +3 more sources
Nonlinear instability of density-independent orbital-free kinetic energy functionals [PDF]
, 2004 We study in this article the mathematical properties of a class of orbital-free kinetic energy functionals. We prove that these models are linearly stable but nonlinearly unstable, in the sense that the corresponding kinetic energy functionals are not bounded from below.
Ashcroft N. W. +3 more
arxiv +4 more sources
Dimensional enhancement of kinetic energies [PDF]
Phys. Rev. A 65, 052109 (2002), 2002 Simple thermodynamics considers kinetic energy to be an extensive variable which is proportional to the number, N, of particles. We present a quantum state of N non-interacting particles for which the kinetic energy increases quadratically with N. This enhancement effect is tied to the quantum centrifugal potential whose strength is quadratic in the ...
Wolfgang P. Schleich +2 more
arxiv +6 more sources
Superconductivity by Kinetic Energy Saving? [PDF]
, 2003 11 pages, ReVTeX, 7 figures in encapsulated ...
H. J. A. Molegraaf +3 more
openaire +5 more sources
Kinetic Architecture; Renewable Energy
ARCHive-SR, 2018 Today, architecture is one of the finest products of the creative human mind that God has given us. Its existence is a necessity which makes the aspects of human life and way of thinking balanced between endless desires and needs.
Azza Gamal Haggag
doaj +2 more sources