A.S. Savinkov ,
№ 18 ТОРОLОGIKAL CHARGES IN THE FIELDS THEORIES WITH BROKEN SIMMETRY
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The effective method on coonstruction of the Hlggs field topological charges expressions is proposed , provided the symmetry group is compact and semisimple. The topological charges are expressed as Integrals on differential forms , defined with help of cbaracterlstlc classes of bundle over the vacuum manifold.
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S.P. Baranov , V.F. Grushin , A.A. Komar , E.F. Telyukov , A.A. Shikanyan ,
№ 36 ТНE СОNТRIВUTIОN OP HADROHIC SHOWERS PRODUCTION AND DECAY TO MULTIMUON EVENTS IN DEEP-PNELASTIC MN SCATTERIHG
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А program for computer simulation of hadronlc showers production and decay in мюN scattering is created. The contribution of this process to multimuon events has been analised and the beam charge asymmetry of the dlmuon production cross section has been accounted for.
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Ya.V. Afanasiev , V.A. Kasakov , K.A. Khachian ,
№ 40 THREE-LAYERED TARGET ACCELERATION IN HEAVY ION FUSION
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M.V. Burova , O.K. Kalashnikov ,
№ 48 THE INTERACTION HIERARCHCHY STABILITY IN OUT-MOCDELS
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The model-independent presf of the mass hierarchy stability for the stability of the SU(N) models of GUT is the main result of this work. We had found that this stability takes place for GUT’s with where complex gauge groups.
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Renata.. Kallosh ,
№ 79 WORD-SHEET SYMMETRIES OP THE HETEROTIC STRING IN (10 ? 496} + 16 — DIMENSIONAL SUPERSPACE
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V.A. Karmanov , T.B. Shapiro ,
№ 81 THE INFLUENCE OF RELATIVISTIC EFFECTS OF THE LEVEL VIDES OF BARYONTUM
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Estimation are obtained which show that the relativistic effects change (as rule, reduce) the level widths of baryonium no more than by 2-3 times. Therefore the predictions of a spectrum of comparatively narrow (of the order of MeV) states in NT system based on potential approach remain valid after incorporating the relativistic effects.
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A.M. Semikhatov , I.E. Kudryavtsev ,
№ 82 SUPERSYMMEETRIC INSTANTON IN THE HARMONIC SUPERSPQACE
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O.D. Dalkarov , V.A. Karmanov , A.V. Trukhov ,
№ 87 ANTIPROTON-NUCLEUS SKATTERING AT LOW AND INTERMEDIATE ENERGIES
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Reaction cross-section and differential cross-section for antiproton scattering from nuclei 12, 20, 27. 40 64 C Ne Al Ca and Cu Are calculated in the energy interval between 20 end 200 MeV. We use Glauber approach taking into account Coulomb interaction. The results of our calculations are in agreement with the experimental data obtained in BIL, KEK and LEAR. Prom the comparison with experiment the real~to~imaginary ratio for pp forward scattering amplitude is extracted.
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Е.Г. Бессонов ,
№ 88 О ПРОСТРАНСТВЕННО-ВРЕМЕННОЙ КОГЕРЕНТНОСТИ ОДНОМОДУЛЯТОРНОГО ИЗЛУЧЕНИЯ
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Spatial and longitudinal coherence properties of the undulator radiation sources are inverstigated in this work. The theory is developed to the case when the beam of char?ged particles has a significant angular and energy spread. The theorem of Van-Cittert and Zernike is generablsed.
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V.P. Frolov , V.I. Ginzburg ,
№ 91 EXCITATION AND RADIATION OF AN ACCELERATED DETECTOR ANOMALOUS DOPPLER EFFECT
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The excitation of a uniformly accelerated detector moving in a vacuum has been widely discussed in recent years. The aim of the present paper is to point out that such an excitation and the associated radiation are similar to those occuring in the region of anomalous Soppier effect which takes place when a detector is moving at a constant superlight velocity in a medium.
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Yu.V. Bogdanov , S.I. Kanorskii , I.I. Sobelman , V.N. Sorokin , I.I. Struk , E.A. Ykov ,
№ 153 THE STUDY OF THE COLLESIONAL BROADENTICS OF THE BISMUTH LINE 648dm HIPERFINE COMPONENTS BY FARADAY ROTATION SPECTRSCOPY
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The spectral profiles of the Faraday effect for the hyperfine multiplet 4s3/2-2d5/2 лямда 648nm in atomic himush have been messured accurately. The possibility to determine the small collisional line width against the considerable. The collisional line broadering and shift rateconstants are determined for perturbation by helium, nitrogen, argon and xenon. The more accurate value is obtained for the ratio of the elektric quadrupole end the magnetic dipole amplitudes for this transition.
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Piret.. Kuusk ,
№ 177 STRING ?INDUCED MODIFICATION OF SUPERSPACE
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E.M. Serebryany , V.D. Skarshinsky ,
№ 220 TНЕ AHAROHOV-BOHM EFFECT РОЕ THE ELAEE ROTATOR IS A KOHGOMGENEOUS MEDIUM
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We discuss la this paper the Aharonov — Bohm effect for stationary states of the charged plane rotator In a nongomogeneous nedium. We present the general treatment of this quantize Mechanical problem with particular emphasis on the dependence of observable quantities on the enclosed magnetic flux. For the simplest model potential we calculate the energy spectrum, wave function and currant explicitly.
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В.Ф. Китаева , В.Ю. Федорович , Н.. Кроо , Н.Н. Соболев , Л.. Чиллаг ,
№ 223 ДИНАМИЧЕСКИЕ ХАРАКТЕРИСТИКИ ЭЛЕКТРИЧЕСКОГО ПОЛЯ СВЕТВОЙ ВОЛНЫ, ПРОШЕДШЕЙ ЧЕРЕЗ НЖК.
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The methods of polarizational investigation of the light radiation passed through nematic liquid crystal (NLC) arc described. The investigation of the electrical field dynamics of the ordinary wave interacting with MLC in the wide range of the light wave power and the angles of the ware incidence is fulfilled. The varies types of the autooscillations of the light file parameters are revealed. The comparative analysis of these types is made.
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V.D. Skarzhinsky , E.M. Serebriany ,
№ 232 Vacuum polarizatin by the time-dependent vagnetic flux and the shwinger model on a circle.
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We consider the quantised Birao field interacting with the magnetic flux via the rotor free vector potential (the Aharonov — Bohm effeotJ.The flux is supposed tobe time-dependent.We answer the following question s Let the initial state of the field is the vacuum one. The external flux undergoes the switching on procedure and approaches the static final value.What is the nature of the final state of the quantised field ? Both general formulas (Section 2 ) and exactly solvable 4* A dimensional model (Section 3 ) are preaented.lt turns out that the massless field falls out of the gene-‘al treatment, for this particular case our model reduces to the Schwinger one.The corresponding exact solution is given in Section 4.
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M.A. Vasiliev ,
№ 233 «FBEE MASSLESS FTEIBS CP ARBITRARY SPIN IN THE ЕЕ SITTER SPACE AND INITIAL DATA KB A HK5ER SPIN SUPERAHEBRA»
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■ Linearised curvatures are constructed for aaesleea higher spin fields on the (anti)- de Sitter background. The quite unifesa description for free massless fields of all integer and half-integer spine 5^- «o» i? presented, based on these curvatures. In particular, the actions and the equations of motion a*.e fiver; in a aitaple form. The proposed linearised curvatures provide «initial data» for determination of a non-Abelian higher spin symmetry that may correspond to a hypothetical nontrivial theory of higher spina interacting with gravity and thenselves. Xt is noted that the conjugation law for fereion fields should be modi?fied drastically after traneition froe the anti-de Sitter geometry to the de Sitter one.
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P.N. Lavrov , J.M. Lichtster , Sh.M. Shvartsman ,
№ 234 EFFECTIVE ACTION in HIGHER DIMENTIOS AND ZETA-FUNCTION REGULARIZATION
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The procedure of the zeta-function regularization ( the^ -regularization) for vacuum one-loop corrections to a elassical actlon for the quantum-field theory in curved space-time of higher dimentione, Ci , le formulated. It is shown that thejj?’ -regularization makes, in general, additional contributions (from the point of view of the dimentlonal regular!station or the proper-time one) to the finite part of the effective action. One can make up for these contributions by a finite renormali-zatlon, The Schwinger-De Witt coefficients/4/, %~i ~тЦ °* the qulaai-classical expansion for the fields of ogin 0, 1/2, 1 in the Yang-Mills theory in Minkowski space of higher dimea-tions are calculated. These coefficients define, in particular, all vaouum divergences in the space ofgf^TS . It is shows that the theory modified by these coefficients proved to be renor-mallzed according to index.
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A.I. Podgorny ,
№ 241 A model of the current sheet with time-variable plasma density.
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A model of the current sheet created by the plasma flow in the vicinity of a magnetio field singular line is construct?ed with the account of basic conservation laws. The main dis?tinguish feature of such a model is that the full plasma mass is time-independent in the current sheet. This assumption was taken since according to numerical calculations the plasma mass of the current sheet changes in time more rapidly than other parameters of the sheet. The criterion of the sheet’s plasma mass deorease ia time is found. Such a decrease of the sheet’s plasma mass leads to fast reconstruction of the magne?tio field configuration associated with a solar flare. Esti?mates made for the solar corona conditions point out the pos?sibility of the existence of the current sheet with the de?creasing plasma mass. In the case if observations permit de?termining the velocity of the plasma flow in the sheet suffi?ciently accurate, the obtained criterion can be used for de?fining the flare situation.
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I.I. Royzen ,
№ 274 On the exclusive distributions of hadron consttruents
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Within the approach suggesting that the independence of valent constitunents in hadrons is contiched by total energy conservation only, their exclusive distributions are exactly expressed through the inclusive oves for pions and protons, if the latter are considered as consisting of quark d and diquark (u u). The method is applicable to other hadrons.
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M.A. Vasiliev ,
№ 290 EXTENDED HICNER-SРIN SUPERALGEBHAS AND THEIR REALIZATIONS IN TERMS OF QUANTUM OPERATORS
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Ihe realization of the N * 1 higher-spin superalgebra, coposed earlier by E.S.Fradkin and the author, is found in terms of bosonic quantum operators. Ihe extended higher-spin superalgebras, generalising ordinary extended supersymmetry with arbitrary N?i, are constructed by adding fermdion quantum operators. Autcmorphisms, forms, subalgebras, contractions and invariant forms of these infinite-dimensional superalgebras are studied. The formilation of i л higher-spin superalgebras is described in terms of symbols of operators by Berazin. We hope that this formulation will provide in future the powerful tool for constructing the complete solu?tion of the higher-spin problem, The ргоЫem of introducing a consistent gravitational interaction for massless higher-spin fields (s>2).
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D.S. Chernavskii ,
№ 295 SOLITONS ON BACTERIORHODOPSIN
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A.A. Tseytlin ,
№ 308 STRING FIELDS COMPONENTS: GENERAL CONVARIANCE VERSUS MASSIVE FIELDS
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Argumente are given for nm-existence of a field theory action for the masslees and Infinite (or a finite but non-aero) nuшЬег of massive modes which satisfies the two requirements: (i) it reproduces closed string-theory S-matrix both in the massless and the massive sectors; (ii) it is invariant under the standard general coordinate transformations with the massive fields transforming simply as tensors. Connections between string field theory, path integral and ? -model approaches to derivation of string equations of notion are discussed.
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E.S. Fradkin , M.A. Vasiliev ,
№ 309 CUBIC INTERACTION IN EXTENDED THEORIES OF MASSLESS HIGHER- SPIN FIELDS
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А cubic interaction of all massless higher-spin fields with s≥ 1 is constructed, based an the extended higher-spin superalgebras suggested previously by one of us (M.V.). this interaction incoiporates gravitational and Yang-Mills interactions of massless higher-spin fields, which turn out to be consistent in the cubic order. An essential novel feature of the gravitational higher-spin interaction is its non-analyticity in the cosmological constant. An explicit torn is found for deformed higher-spin gauge transformations leaving the action invariant.
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P.B. Lerner ,
№ 315 Atom radiation in a blackbody cavity
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It is well known, that external resonator or, more general, any physical body modify the spontaneous emission probability / 1-4 / and concerned effects such as Lemb shift / 5 /, AC Stark / 6,7 / as well. In this paper we present the phenomenologieal approach to that problems close to original Bethe ideas / 8 /, and (or) formalism of / 4 /. It helps to investigate finite (T / 0) temperature role and to demonstrate some physical effects due to the fact. The cavity Lemb shift calculation prescription of / 5 / is valued on basis of this ideas.
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R.R. Metsaev , A.A. Tseytlin ,
№ 316 curvature cubed terms in string theoryeffective actions
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Starting from the 3- and 4-point amplitudes we determine the R3-terms in the gravitational effective actions in the bose heterotic and type П super string theories. We prove the absence of unarbiquous R3-terms (ineluding the Gauss-Bonnet R3-invariant)) in the heterotic and superstring cases. As a by-product, we cheek the presence of tha square of the Lorents Chern-Simons term in the heterotic string effective action and obtain the 3- loop contribution to the &-function of the bosonic sigma-model. We also discuss the structure of the field redefinition aabiguity in a gravitational effective action.
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A.F. Plotnikov , V.E. Shubin ,
№ 322 THE AVALANCHE PROCESS UNDER CONDITIONS OF A NEGATIVE FEEDBACK IN A SEMICONDUCTOR-INSULATOR INTERFACE
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I.I. Mazin , E.G. Maksimov , S.Yu. Savrasov , Yu.A. Uspenski ,
№ 334 The problem of the dielectric gap in the density functional theory
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We analyze the self-energy operator of the Dybon equation in solids in comparison with the Kohn-Sham local potential of the density funotlonal theory (DFT). This allows us to explain why there is little difference between the DFT one-particle spectra and the spectra of actual one-electron excitations (OEE) in metals and why this difference is considerable in insulators. We can point the terms responsible for this difference. This allows us to propose a very simple method to derive the OEE spectra from the DFT calculation. Particularly, the calculation of the energy gap in semiconductors (C, Si), large-gap dielectrics (Ne, Ar, Kr) and ionie solids (MgO,LiF,NaCl) provides an agreement with the experiments well within 5%. The additional cal-culatlnn al efforts are neglegible in comparison with a usual selfcosistent DFT calculation.
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V.M. Kaslin ,
№ 346 A NEW METHOD FOR DETERMINING SPECTROSCOPIC CONSTANTS OF DIATOMIC MOLECULES
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The properties of a diatomic molecular forge constant k, are analysed on the basis of the ?e experimental trainee la point of the place of the molecule-composing atoms in the Mendeleev periodic system
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