Results 231 to 240 of about 267,312 (266)
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Annals of Physics, 1962
Abstract An investigation is made of a variant of the Yukawa potential for which the scattering amplitude may have no more analyticity in momentum transfer than the Lehmann ellipse. A representation, the generalization of the Mandelstam representation to this case, is written down, and unitarity used to determine the spectral function.
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Abstract An investigation is made of a variant of the Yukawa potential for which the scattering amplitude may have no more analyticity in momentum transfer than the Lehmann ellipse. A representation, the generalization of the Mandelstam representation to this case, is written down, and unitarity used to determine the spectral function.
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Use of negative complex potential as absorbing potential
The Journal of Chemical Physics, 1998Exact numerical calculation shows that the use of negative complex potential (NCP) significantly improves the efficiency of wavefunction absorption over that of negative imaginary potential (NIP) in scattering applications. The improvement in absorption is especially significant in the case of low energy scattering with de Broglie wavelength larger ...
Jiu-Yuan Ge, John Z. H. Zhang
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Orbital complexity in a time‐dependent potential
Astronomische Nachrichten, 2008AbstractWe introduce a method to detect irregular or chaotic orbits in gravitational potentials based on a wavelet transform of stellar orbits. The method is based on a treatment of normalised frequency power‐spectrum coefficients, which we interpret as occupation probabilities (or, weights) of individual frequency modes.
Boily, C. M., Detemple, L., Faber, N. T.
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Biotechnological potential of pectinolytic complexes of fungi
Biotechnology Letters, 2011Plant cell wall-degrading enzymes, such as cellulases, hemicellulases and pectinases, have been extensively studied because of their well documented biotechnological potential, mainly in the food industry. In particular, lytic enzymes from filamentous fungi have been the subject of a vast number of studies due both to their advantages as models for ...
Alicia, Lara-Márquez +3 more
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Understanding complex perturbative effective potentials
Physical Review D, 1987We examine the situation where the perturbatively calculated effective potential develops an imaginary part. We show that his imaginary part has a natural interpretation as a decay rate per unit volume of a well-defined state and that it agrees quantitatively with an independent calculation of this rate.
, Weinberg, , Wu
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1994
Analytic multifunctions and their applications, B. Aupetit Harmonic approximation on closed subsets of Riemannian manifolds, T. Bagby, P.M. Gauthier Pick interpolation, Von Neumann inequalities, and hyperconvex sets, B.J. Cole, J. Wermer Complex dynamics in higher dimensions, J.E. Fornass, N. Sibony Analytic functions on Banach spaces, T.W.
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Analytic multifunctions and their applications, B. Aupetit Harmonic approximation on closed subsets of Riemannian manifolds, T. Bagby, P.M. Gauthier Pick interpolation, Von Neumann inequalities, and hyperconvex sets, B.J. Cole, J. Wermer Complex dynamics in higher dimensions, J.E. Fornass, N. Sibony Analytic functions on Banach spaces, T.W.
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Streamfunction and Complex Potential
2007The streamfunction is another mathematical construct that is of high importance for models using analytical solutions. Together with the potential the streamfunction enables the visualization of flow patterns that can hardly be produced by other methods.
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Potential Carcinostatic Activity of Metal Complexes
1978For several years, there has been considerable controversy about the question of whether certain forms of cancer in humans are caused by viruses. Luria(1) indicated in 1960 that there was already considerable evidence that many tumors have viruses associated with them. In 1966, Kirschner et al.(2) proposed that certain complexes of the heavy transition
Stanley Kirschner +3 more
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Physical Review A, 2004
Analytical expressions for the resonances of the long-range potential (LRP), V(r)=a/r-b/r{sup 2}, as a function of the Hamiltonian parameters were derived by Doolen a long time ago [Int. J. Quant. Chem. 14, 523 (1979)]. Here we show that converged numerical results are obtained by applying the shifted complex scaling and the smooth-exterior scaling ...
Shachar Klaiman +2 more
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Analytical expressions for the resonances of the long-range potential (LRP), V(r)=a/r-b/r{sup 2}, as a function of the Hamiltonian parameters were derived by Doolen a long time ago [Int. J. Quant. Chem. 14, 523 (1979)]. Here we show that converged numerical results are obtained by applying the shifted complex scaling and the smooth-exterior scaling ...
Shachar Klaiman +2 more
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Aminophosphonate Metal Complexes of Biomedical Potential
Current Medicinal Chemistry, 2013Metals and their complexes with organic ligands have an important role in biochemical systems such as enzymatic catalysis, metal ion transfer across the cell membranes, treatment of malignancy, rheumatoid arthritis, ulcer and other types of diseases. Special attention is directed to metal complexes with ligands which are important in biological systems,
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