The influence of adsorption-desorption processes on the switching effect in $VO_2$ films
The influence of adsorption-desorption processes on the switching effect in $VO_2$ films
S.Yu. Vinichenko, N.L. Levshin, S.Yu. Poroikov
The influence of adsorption of donor and acceptor molecules on the switching effect was studied in vanadium dioxide films. The switching voltage was found to increase with adsorption of donor molecules and to decrease as a result of UV irradiation.
Show AbstractGeneralized Pauli-Willars regularization and the stochastic quantization method
Generalized Pauli-Willars regularization and the stochastic quantization method
M.S. Imashev, D.A. Slavnov
The paper considers the possibility of applying the generalized Pauli-Willars regularization, with an additional condition imposed on the logarithms of auxiliary masses, to eliminate the ultraviolet divergence of correlation functions in the case of stochastic quantization of a scalar field. The equivalence of probability distributions in the regularized stochastic theory and in the Euclidean quantum field theory is established.
Show AbstractStochastic quantization of gravity
Stochastic quantization of gravity
Yu.V. Kuz'min
A method of stochastic quantization is proposed for field theories with indefinite Euclidean action, based on the introduction of a nonlocal kernel of a special form in the generalized Langevin equation. The method is applied to stochastic quantization of gravitation theories with Einstein's Lagrangian and of the $R^2$ gravity.
Show AbstractUltraviolet finiteness of the Wess-Zumino-Witten gauge model on homogeneous manifolds
Ultraviolet finiteness of the Wess-Zumino-Witten gauge model on homogeneous manifolds
V.V. Belokurov, P.M. de Barrush Pasheku Seara de Sa
In the nonlinear two-dimensional model, whose action is the sum of actions of two Wess-Zumino-Witten models and of the interaction of a special kind between them, the classical energy-momentum tensor is expressed in terms of conserved currents. For the Virasoro algebra generated by the tensor to have a constant central charge in quantum theory, it is required that the theory by finite. It is shown by means of an explicit calculation of one- and two-loop counterterms that this is the case only for a special choice of parameters for which the model is gauge-invariant and is defined on a homogeneous space.
Show AbstractAxigluonic decay of quarkonium in the chiral color model
Axigluonic decay of quarkonium in the chiral color model
R.N. Faustov, I.G. Vasilevskaya
The chiral color model predicts the existence of axigluons, i.e. a color octet of massive axial-vector gauge bosons. In this connection, of interest in the decay of quarkonium into a gluon and a virtual axigluon, the latter disintegrating into a quark-antiquark pair. In this study, an expression has been found for the decay width of quarkonium S states. Calculations have been carried out for charmonium $J/\Psi$ and bottomonium $\Upsilon$ for different values of the axigluon mass.
Show AbstractOn polarization effects in Cerenkov radiation
On polarization effects in Cerenkov radiation
I.M. Ternov, V.Ch. Zhukovskii, A.V. Borisov, A.H. Moussa
An expression for the Cerenkov radiation power with consideration for the arbitrary electron and photon polarization is obtained which generalizes the results of previous studies. Various special cases are investigated. The polarization vector of the final electron is found, which is determined by the initial polarization and electron and photon momenta.
Show AbstractMagnetic insulation in two-electrode systems with rectilinear generators
Magnetic insulation in two-electrode systems with rectilinear generators
O.I. Vasilenko
Within the framework of single-velocity cold hydrodinamics, magnetic insulation in two-electrode systems of arbitrary cross-section is described for the case when the generators of the electrodes are parralel straight lines or straight lines intersecting at one point.
Show AbstractInvestigation of radial distribution of the current density for the tubular relativistic electron beam in the transport channel
Investigation of radial distribution of the current density for the tubular relativistic electron beam in the transport channel
A.F. Aleksandrov, V.L. Vesnin, S.Yu. Galuzo, V.A. Kubarev, V.V. Mikheev, V.A. Pletyushkin, V.Yu. Sergienko
Variations of the radial profile of the current density for the tubular relativisttic electron beam (REB) in a long vacuum channel have been studied with the help of the sectional collector. In the experiments, the REB wall thickness was observed to increase with an increase in the transport channel length and a decrease in the guiding magnetic field. It has been shown that when a certain critical value of the magnetic field strength is exceeded, the REB wall thickness ceases to change along the drift channel length. The results obtained agree with the estimates made according to the theory of diocotron instability.
Show AbstractThe effect of cross-modulation on free carriers in semiconductors for laser diagnostics of high-power SHF radiations
The effect of cross-modulation on free carriers in semiconductors for laser diagnostics of high-power SHF radiations
A.V. Kozar', S.A. Krupenko
Simultaneous action of the continuous SHF and IR radiations affects the reflection coefficients of crystalline silicon due to alterations of both the temperature of the sample and the mobility and concentration of free charge carriers. Some theoretical and experimental results, as well as prospects for applying the effect in scientific studies, are considered.
Show AbstractAn opto-acoustic study of the absorption of radiation by rough surfaces
An opto-acoustic study of the absorption of radiation by rough surfaces
A.A. Benditskii, A.A. Karabutov, I.A. Kudinov, V.T. Platonenko, M.A. Sogoyan, A.V. Chugunov
Absorption of radiation in the medium IR range by a periodic-profile metal surface has been investigated. The absorbed energy was measured by means of the opto-acoustic effect. Sharp and narrow absorption peaks were observed at light incidence angles corresponding to resonance excitation of surface electromagnetic waves by scattered radiation. A method of determining surface roughness and angular spectrum of laser radiation is proposed.
Show Abstract