Results 121 to 130 of about 129,401 (167)
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Variational Calculation of Electron Scattering by a Static Potential
Physical Review, 1955The Schwinger variational method, for the approximate determination of scattering amplitude, is tested for accuracy in the case of the elastic scattering of electrons from the static potential $V(\mathrm{r})=\ensuremath{-}\frac{{e}^{2}{V}_{0}{e}^{\ensuremath{-}\ensuremath{\lambda}r}}{r}$, by using eight different forms of trial wave functions.
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A lattice calculation of f with the static approximation
Nuclear Physics B - Proceedings Supplements, 1992We calculated the B-meson decay constant fB with the static approximation on the lattice. We found that the result depends largely on the size of smeared operators used to improve overlap with the ground state. This finding may explain discrepancies between the values of fB obtained by different authors using the static quark approach. At the same time
Shoji Hashimoto, Yuji Saeki
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A fast iterative procedure for static Hartree-Fock calculations
Il Nuovo Cimento A, 1979A very general method to determine directly the one-body density matrix which minimizes the total energy of a nuclear system in the Hartree-Fock approximation is proposed. The approach corresponds to a multiparameter search which leads to a system of nonlinear equations. A suitable linearization generates a simple iterative procedure which converges in
RUSSO, Giuseppe, M. Di Toro
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Static response from quantum Monte Carlo calculations
Physical Review Letters, 1992We have evaluated the density-density static response of a many-body system by calculating with the quantum Monte Carlo method the energy and density change caused by an external potential. Our results for the linear response function of liquid 4 He at zero pressure and temperature are in excellent agreement with the available experimental data.
, Moroni, , Ceperley, , Senatore
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Calculation of static susceptibility maps using the reciprocity theorem
Clinical Physics and Physiological Measurement, 1991In performing measurements of magnetic susceptibility of human tissues, it is useful to calculate the field produced by a magnetisation distribution over a relatively large measurement area. This involves costly computations that can be made easier by the use of the reciprocity theorem.
C, Del Gratta, S, Casciardi
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Remark on the calculation of the static dielectric constant
Physica, 1956Synopsis Macroscopic relations are derived between the dielectric constant and the fluctuations of the dipole moment of a substance. They can be used as a basis for a microscopic calculation of the dielectric constant. For an appropriate model this confirms Onsager's equation.
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Calculated static and dynamic properties of solid α-F2
The Journal of Chemical Physics, 1986The equilibrium structure and orientations of soid fluorine are calculated at zero temperature and pressure by completely optimizing a general monoclinic lattice with two molecules per unit cell. In addition to the lattice parameters and orientations, the molar volume, sublimation energy, and gas phase second virial coefficients are calculated. The k=0
Kirin, Davor, Etters, Richard D.
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Calculation of the static magnetization of metamagnetic La2CuO4
Journal of Applied Physics, 1991Interactions in La2CuO4 are predominantly antiferromagnetic. However, a strong field-induced transition is seen in the static magnetic susceptibility which points to the existence of a net ferromagnetic moment in the CuO layers. Here, this net ferromagnetic moment is incorporated into a description of the CuO layers by the inclusion of a modified ...
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Static calculation - Boiler Bolzano
2011Technical report contains calculation of reactions in boiler supports and also the calculation of strength and stiffness of membrane walls and buckstays system. Existing calculation methods were improved and new procedures were developed. Besides analytic methods for determination of stress state, the finite elements method was also used on boiler.
Kokanović, Mato +3 more
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Accelerated Poisson–Boltzmann calculations for static and dynamic systems
Journal of Computational Chemistry, 2002AbstractWe report here an efficient implementation of the finite difference Poisson–Boltzmann solvent model based on the Modified Incomplete Cholsky Conjugate Gradient algorithm, which gives rather impressive performance for both static and dynamic systems. This is achieved by implementing the algorithm with Eisenstat's two optimizations, utilizing the
Ray Luo 0001 +2 more
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