Results 251 to 260 of about 1,422,540 (296)

G-matrix effective interaction with the paris potential

Nuclear Physics A, 1985
Abstract An effective interaction is derived by fitting the oscillator matrix elements of the sum of the OBEP functions to the G -matrix elements derived from the Paris nucleon-nucleon interaction. The functional form, the mass dependence and the ambiguities of the effective interaction are discussed.
A. Hosaka, K.-I. Kubo, H. Toki
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G-matrix stability in clinally diverging populations of an annual weed

Evolution, 2022
AbstractHow phenotypic and genetic divergence among populations is influenced by the genetic architecture of those traits, and how microevolutionary changes in turn affect the within-population patterns of genetic variation, are of major interest to evolutionary biology.
Georgia Alexandria Henry, John R Stinchcombe   +1 more
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The G-Matrix in Finite Nuclei

1993
One of the central aims of nuclear structure theory is to derive the properties of nuclei from a realistic nucleon-nucleon (NN) interaction. Such a realistic NN interaction should be determined to describe the interaction of two nucleons in a vacuum, which means that it should reproduce the experimental data on NN scattering and the properties of the ...
H. Müther, P. U. Sauer
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Comparative quantitative genetics: evolution of the G matrix

Trends in Ecology & Evolution, 2002
Abstract Quantitative genetics provides one of the most promising frameworks with which to unify the fields of macroevolution and microevolution. The genetic variance–covariance matrix ( G ) is crucial to quantitative genetic predictions about macroevolution. In spite of years of study, we still know little about how G evolves.
Scott J. Steppan, Patrick C. Phillips, David Houle   +2 more
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G-matrix interaction in the nuclear 1p shell

Nuclear Physics A, 1967
Abstract A G-matrix interaction applicable to nuclear states of the configuration (1s)4(1p)A−4 is obtained by fitting the position of energy levels in the 1p shell. In addition to a simple two-body potential the three-body vector force previously shown to arise from second-order effects of the tensor force is included.
Paul Goldhammer, J.Roger Hill, Jack Nachamkin   +2 more
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g-Matrix Based on Configuration Interaction and Stone's Perturbation Theory

Journal of Magnetic Resonance, 1999
Stone's formula, which has usually been applied to the calculation of the g-matrix, is based on a single-configuration treatment. Here a limited configuration interaction is included to obtain the expressions of the principal g values for an orbitally nondegenerate molecule with spin S = 12. Copyright 1999 Academic Press.
, Li, , Hong, , Cao, , Kang, , Liu
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On the redundant conditions in G-matrix

Journal of Molecular Structure, 1984
Abstract The Wilson GF-matrix method of solving the problem of vibrational eigenvalues sometimes leads to G-matrix with redundancies. The paper discusses, when Godnev-Oriova-Rigina's method is used, the problem of redundancy conditions among the internal coordinates and rows of G-matrix with zero eigenvalues.
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G Matrix assembly and SCF iteration damping

Computers & Chemistry, 1983
Abstract Some simplifications to Duke's method for assembly of the G matrix are presented. These modifications make it more efficient and applicable on machines with word lengths shorter than 60 bits. Additionally an improvement to the SCF iterative damping scheme of de Montogolfier and Horeau is given.
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An Alternative Approach to the g‐Matrix: Theory and Applications

ChemPhysChem, 2006
AbstractStarting from the formula proposed by Gerloch and McMeeking in 1975, the electronic g‐matrix is expressed as a sum of two matrices called Λ and Σ describing the orbital and spin contributions respectively. This approach is applied on benchmark diatomic and triatomic molecules, and on TiF3 and Cu(NH3)42+ using either CASPT2 or CCSD(T) methods to
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G-matrix elements with effective masses for mesons and nucleons

Nuclear Physics A, 1991
Abstract G-matrix elements for finite nuclei are calculated using effective masses for mesons and nucleons at finite density, i.e., those in nuclear medium. We find that the central G-matrix elements are very sensitive to masses of the sigma and omega.
A. Hosaka, H. Toki
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