The Weinberg-Salam model has been used to examine the effects of Higgs bosons on lepton motion in a magnetic field in the second order of perturbation theory with respect to the electroweak interaction constant.
Show AbstractIt is shown that field manifold parallelizability follows from the conditions for current conservation in a two-dimensional supersymmetric $\sigma$-model containing a Vessa-Zumino turn.
Show AbstractA traveling wave is considered in an inhomogeneous self-oscillating medium; the wave is partially reflected at the boundary between two regions differing in oscillation frequency.
Show AbstractAn equation is derived for the second moment of the magnetid field in a random multiscale velocity pattern. An asymptotic study is made for an isotropic multiscale flow having mirror symmetry.
Show AbstractAmplitude modulation is transferred from one laser beam to another in a planar-oriented mixture of nematic liquid crystals to determine the dispersion in the cubic nonlinearity $\chi ^{(3)}$ at a Rayleigh-line flank with a resolution of a few Hz. The anomalously large values are due in part to the collective behavior in the orientation ordering and in part to the anomalously large $\partial {\epsilon} / \partial T$ and dichroism. Measurements have been made on $x_{ijk}^{3}$, relaxation time, elastic moduli, and thermal diffusivity parallel and transverse to the liquid-crystal director.
Show AbstractMeasurements have been made on the critical behavior of the second-harmonic amplitude in gadolinium molybdate; they agree with theoretical results obtained from the renormalization-group method. The irregular steps in the amplitude at the second harmonic and the phase steps at the fundamental in the range 80-140°C are due to polarization.
Show AbstractThe moment method as widely used in cascade theory is extended: scattering and realistic cross sections for other elementary interactions are introduced. A cascade inlet is used in examining the physical and mathematical accuracies.
Show AbstractExcitation transfer has been examined for two-component ethanolic dye solutions at various temperature. Molecular association and inhomogeneous broadening affect the migration. The critical radius and the relative rate constants have been determined as functions of temperature.
Show AbstractMonte Carlo calculations with high time resolution have been used to detect the time dependence of the energy transfer in a restricted-volume organic complex of phycobilisome type. A variable time step was used in the calculations to detect the active exciton and perform microscopic calculations on the transfer rate.
Show AbstractMeasurements have been made on the energy shift in the $4s_{1/2}$ level for the sodium atom in linearly and circularly polarized beams in resonance with the $4s_{1/2} – 4p_{1/2,3/2}$ transition. Two-photon absorption and parametric mixing have been used in the probing. The shift, broadening, and splitting of the $4s_{1/2}$ level have been recorded.
Show AbstractA free-running $Nd^{3+}$ multifiber laser has been examined for subthreshold emission and the effects of end reflections on the energy and threshold parameters. Measurements have been made on the spectrum width, pulse length, and divergence as the pumping energy is varied.
Show AbstractPerturbation theory is applied to continuum contributions to the Raman-scattering RS cross sections for the hydrogen atom; in some cases, the contributions from continuum states to the scattering cross sections are comparable with those from the discrete spectrum.
Show AbstractRhodamine 6G has been used with oxazine 17 and cresyl violet, as well as rhodamine C with oxazine 17, to examine the relation between fluorescent radiation transport and lasing as affected by acceptor concentration on laser excitation. Measurements have been made on the acceptor concentrations at which donor lasing ceases, which agree with theoretical estimates derived from the spectra.
Show AbstractA temperature dependence is demonstrated for S, the point-defect thermal entropy of formation, and a method is proposed for determining S(T) by measuring the voltage-current characteristics for recombination-emission currents.
Show AbstractA method is given for calculating polymer-chain static magnetic susceptibilities on the basis of simulating the $\pi$-electron density distribution for a hydrocarbo n molecule of any length from the $\pi$-electron distributions for C-C pairs with variable distances between the C ions. The $\sigma$ core susceptibility is incorporated as the sum of the $\sigma$ bonds in the molecule.
Show AbstractIt is shown that the following occur in relativistic gravitational theory: 1) no nontrivial spatial topologies arise in gravitational collapse and 2) there are no models of the universe having nontrivial topology.
Show AbstractThe Stark shifts have been calculated for the first three levels for electrons localized over liquid helium in the third order in perturbation theory. The results agree well with measurements for $^4Не$ and $^3Не$.
Show AbstractCalculations are presented on the differential cross section and polarization characteristics for elastic proton scattering at $Т_p$ = 500 MeV by $^{90}Zr$ in the eikonal approximation within a relativistic optical model.
Show AbstractDifferential and total cross sections have been derived for the excitation of $3p^53d$ ($J = l$) levels in argon by intermediate-energy electrons; electron-photon correlations in emission from these levels via transition to the ground and $Зр^54р$ states are considered.
Show AbstractMagnetization measurements have been made on $Ba_2Ni_2Fe_{12-x} Cr_хO_{22}$ (x = 0.0, 1.5, and 3.0). The magnetization is dependent in a complicated fashion on the chromium content. It is suggested that there is noncollinear magnetic ordering in chromium-substituted hexaferrites.
Show AbstractA model potential has been used in calculating the residual resistivity for Cu + 15 at.% Zn. The size effect has an anomalous influence on the residual resistivity in Cu-Zn alloys (reduces it).
Show AbstractConditions are considered under which the probe-emitter parameters provide the maximum resolution in a scanning tunneling microscope; a method is described for making emitters with preset features.
Show AbstractMeasurements have been made on the magnetocaloric effect in a dysprosium single crystal up to 60 kOe. Above 20 kOe, there are two peaks on the temperature-dependence curve. The entropy change in the phase transition has been determined as a function of the field.
Show Abstract
