One-dimensional Chern-Simons theory

We study a one-dimensional toy version of the Chern-Simons theory. We construct its simplicial version which comprises features of a low-energy effective gauge theory and of a topological quantum field theory in the sense of Atiyah.Comment: 37 page

Некоторые вопросы правового регулирования приватизации муниципальной собственности отдельного субъекта федерации (на примере Москвы)

Clause mentions are one of the most complex legal questions of last time - legal regulation of process of transition of the property right in a modern Russian transitive society. The detailed analysis of process and conditions of privatization is lead. Features and specificity of the mechanism of privatization of the municipal property, characteristic federations for separately taken subject are considered.Статья затрагивает один из наиболее сложных правовых вопросов последнего времени - правовое регулирование процесса перехода права собственности в современном российском обществе. Проведен подробный анализ процесса и условий приватизации. Рассмотрены особенности и специфика механизма приватизации муниципальной собственности, характерные для отдельно взятого субъекта федерации

Управление губерниями по «наказу губернаторам» 1837 г.

The thesis is devoted to the evolution of the governor's institute in the Russian empire. The article is focused on the problems related to formation and development of governor's institute according to Governor's order of 1837.В статье дан анализ обстоятельств, обусловивших причины принятия «Общего наказа гражданским губернаторам», показано последующее развитие института губернаторства в период правления Николая I

On the SO(N) symmetry of the chiral SU(N) Yang--Mills model

The posibility of quantizing the anomalous $SU(N)$ Yang--Mills model preserving the symmetry under the orthogonal subgroup is indicated. The corresponding Wess--Zumino action (1-cocycle) possesses the additional $SO(N)$ symmetry and can be expressed in terms of chiral fields taking values in the homogeneous space $SU(N)/SO(N)$. The modified anomaly and the constraints commutator (2-cocycle) are calculated.Comment: 9 pages, preprint PAR-LPTHE 92-48 (DECEMBER 1992), Late

Electrophysical properties of meso-porous silicon free standing films modified with palladium

Resistivity and complex impedance voltage dependences for thick mesoporous silicon free layers were studied in this work. The asymmetrical by the sign of applied voltage experimental curves at low frequencies have been obtained. Modification of electrophysical properties due to introduction of palladium particles into the porous matrix is observed. Impedance change regularities during oxidation of the samples have been measured. The explanation of experimental results by asymmetrical distribution of charge carrier traps in the bulk of porous silicon has been suggested. Energy band diagrams and charge transfer mechanisms of these heterostructures are discussed

Radon and ionosphere monitoring as a means for strong earthquakes forecast

The relation between radon emanation in seismically active regions and variations of the ionosphere parameters is considered. The quasistationary anomalous electric field generated in the near-ground layer of the atmosphere due to radon and metallic aerosols emanation is proposed as the main agent of the seismo-ionospheric coupling mechanism. The effects of the quasistationary electric field penetrated into the ionosphere are considered theoretically and compared with the experimental results. The comparison confirms the proposed conception of the seismo-ionospheric coupling

Small-angle fragmentation of carbon ions at 0.6 GeV/n: a comparison with models of ion-ion interactions

Momentum distributions of hydrogen and helium isotopes from 12C fragmentation at 3.5° were measured at 0.6 GeV/nucleon in the FRAGM experiment at ITEP TWA heavy ion accelerator. The fragments were selected by correlated time of flight and dE/dx measurements with a magnetic spectrometer with scintillation counters. The main attention was drawn to the high momentum region where the fragment velocity exceeds the velocity of the projectile nucleus. The momentum spectra of fragments span the region of the fragmentation peak as well as the cumulative region. The differential cross sections cover six orders of magnitude. The distributions measured are compared to the predictions of three ion-ion interaction models: BC, QMD and LAQGSM03.03. The kinetic energy spectra of fragments in the projectile rest frame have an exponential shape with two temperatures, being defined by their slope parameters

Gauge Formulation for Higher Order Gravity

This work is an application of the second order gauge theory for the Lorentz group, where a description of the gravitational interaction is obtained which includes derivatives of the curvature. We analyze the form of the second field strenght, $G=\partial F +fAF$, in terms of geometrical variables. All possible independent Lagrangians constructed with quadratic contractions of $F$ and quadratic contractions of $G$ are analyzed. The equations of motion for a particular Lagrangian, which is analogous to Podolsky's term of his Generalized Electrodynamics, are calculated. The static isotropic solution in the linear approximation was found, exhibiting the regular Newtonian behaviour at short distances as well as a meso-large distance modification.Comment: Published versio

Self-induced and induced transparencies of two-dimensional and three- dimensional superlattices

The phenomenon of transparency in two-dimensional and three-dimensional superlattices is analyzed on the basis of the Boltzmann equation with a collision term encompassing three distinct scattering mechanisms (elastic, inelastic and electron-electron) in terms of three corresponding distinct relaxation times. On this basis, we show that electron heating in the plane perpendicular to the current direction drastically changes the conditions for the occurrence of self-induced transparency in the superlattice. In particular, it leads to an additional modulation of the current amplitudes excited by an applied biharmonic electric field with harmonic components polarized in orthogonal directions. Furthermore, we show that self-induced transparency and dynamic localization are different phenomena with different physical origins, displaced in time from each other, and, in general, they arise at different electric fields.Comment: to appear in Physical Review

Spin structure of the nucleon: QCD evolution, lattice results and models

The question how the spin of the nucleon is distributed among its quark and gluon constituents is still a subject of intense investigations. Lattice QCD has progressed to provide information about spin fractions and orbital angular momentum contributions for up- and down-quarks in the proton, at a typical scale \mu^2~4 GeV^2. On the other hand, chiral quark models have traditionally been used for orientation at low momentum scales. In the comparison of such model calculations with experiment or lattice QCD, fixing the model scale and the treatment of scale evolution are essential. In this paper, we present a refined model calculation and a QCD evolution of lattice results up to next-to-next-to-leading order. We compare this approach with the Myhrer-Thomas scenario for resolving the proton spin puzzle.Comment: 11 pages, 6 figures, equation (9) has been corrected leading to a revised figure 1b. Revision matches published versio