Photosensitive AlGaAs / GaAs Structures Grown by Molecular Beam Epitaxy

AlGaAs / GaAs photosensitive structures were grown by molecular beam epitaxy and photodetector de-vices were fabricated. The structures were characterized by reflection high-energy electron diffraction (RHEED), reflectance anisotropy spectroscopy (RAS) and atomic force microscopy (AFM). Spectral charac-teristics of p-i-n structures were calculated. It is shown that obtained structures have atomically smooth surface and abrupt heterointerfaces. Room-temperature I-V measurements of fabricated photodetectors showed low dark current Id=3.38 nA at reverse bias Urev=5 V. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3613

Three-loop universal anomalous dimension of the Wilson operators in N=4 SUSY Yang-Mills model

We present results for the three-loop universal anomalous dimension of Wilson twist-2 operators in the N=4 Supersymmetric Yang-Mills model. These results are obtained by extracting the most complicated contributions from the three loop non-singlet anomalous dimensions in QCD which were calculated recently. Their singularities at j=1 agree with the predictions obtained from the BFKL equation for N=4 SYM in the next-to-leading order. The asymptotics of universal anomalous dimension at large j is in an agreement with the expectations based on an interpolation between weak and strong coupling regimes in the framework of the AdS/CFT correspondence.Comment: LaTeX file, 13 pages, no figures. Some corrections, additional remarks and references. In the last version the analysis of anomalous dimension at j -> 2 was improve

Status of “Siberia-2” SR sourse preinjector

Improvements made in linac systems have significantly increased the reliability of its operation. At present time the linac injects an electron beam with an energy of 75 MeV, beam current of 65 mA (DE/E=1%), with a pulse duration of 18 ns at a repetition rate of 1 pps

Finite size giant magnons in the SU(2) x SU(2) sector of AdS_4 x CP^3

We use the algebraic curve and Luscher's mu-term to calculate the leading order finite size corrections to the dispersion relation of giant magnons in the SU(2) x SU(2) sector of AdS_4 x CP^3. We consider a single magnon as well as one magnon in each SU(2). In addition the algebraic curve computation is generalized to give the leading order correction for an arbitrary multi-magnon state in the SU(2) x SU(2) sector.Comment: 19 pages; v2, v3: references added, typos fixe

The Spin-Dependent Structure Functions of Nuclei in the Meson-Nucleon Theory

A theoretical approach to the investigation of spin-dependent structure functions in deep inelastic scattering of polarized leptons off polarized nuclei, based on the effective meson-nucleon theory and operator product expansion method, is proposed and applied to deuteron and $^3He$. The explicit forms of the moments of the deuteron and $^3He$ spin-dependent structure functions are found and numerical estimates of the influence of nuclear structure effects are presented.Comment: 42 pages revtex, 7 postscript figures available from above e-mail upon request. Perugia preprint DFUPG 92/9

Review of AdS/CFT Integrability, Chapter III.3: The dressing factor

We review the construction of the AdS/CFT dressing factor, its analytic properties and several checks of its validity.Comment: 22 pages, see also overview article arXiv:1012.3982, v2: references to other chapters update