E.J. Ferrer , V.de la. Incera
№ 9 INHOMOGENEOUS W-CONDENSATE IN FERMIONIC DENSE ELECTROWEAK MATTER AT HIGH TEMPERATURE
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We consider high-temperature electroweak matter at nonzero leptonic charge density. It Is shown that the temperature growth leads to the weakening of the Inhomogenelty In the W-condensate. The relation between the parameter characterizing the inhomoge?nelty at high and zero temperature is found. Possible implica?tions of this weakening to the predicted observational effects in the background gravitational radiation are outlined.
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V.V. Eliseev , A.A. Zozulya , V.T. Tikhonchuk
№ 22 THE LIGHT BEAMS WAVEFRONTS STRUCTURE IN THE PARAMETRIC RING OSCILLATOR
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The stationary transverse structure of the light beams in the parametric rinx oscillator created under the self-intersection of the probe light beam in the nonlinear medium, is determined It is shown for Gaussian probe beam as an example tbet the conjugation fidelity of the scattered radiation increases with increase in intensity of the probe beam.
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A.V. Marshakov
№ 53 EFFECTIVE BOUNDARY ACTION IN THE FERMIONIC STRING THEORY
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The Polyaicov path integral on Riaoaon aufraoea with boundaries for the Neveu-Schwara-Ramond (NSR) fermlonlo string la computed In the case of a epeolal ohoice of the looal boundary oandltlons for tne fennionic fields. Effective boundary action is written explicitly by meana of the functions defined on the double of the surface. The obtained expreeeione are used to study the behaviour of the string propagator In the configuration space. The generalization of the effective farmionic actior to the case of nonarchlmedean strings Is discussed.
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A.V. Marshakov , A.V. Zabrodin
№ 54 NEW p-ADIC STRING AMPLITUDES
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It is phovm that the branching raultiplicative characters (corresponding to certain quadratic extensions) CA the p-adic number fields can be used to construct the tree amplitudes la the p-adic string theory. In particular, the p-adic analogues of the tachyon amplitudes in the Keveu-Schwar? sector of the superstring and the p-adic amplitudes of the emission of the тазз1еэо vector particles for the bosonic non-archimedear. string ore obtained.
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S.E. Konstein , M.A. Vasiliev
№ 58 EXTENDED HIGHER SPIN SUPERALGEBRAS AND THEIR MASSLESS REPRESENTATIONS
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Three two-parameter sequences of infinite dimensional < ended higher spin superalgebras are constructed, which give r to consistent equations of motion of interacting gauge fields С all spins in four dimensions. In the Mag-Hills sector of epin-1 gauge fields, these higher spin superalgebras reduoe to u(n)(?u(m), o(n) ф o(m) and usp(n) физр(га) with arbitrary integer parameters n?0 and ш?0 (n and m are assumed to be even for symplectic algebras). Massless unitary representations of the proposed higher spin superalgebras are analyzed. It is shown that all these superalgebras obey the admissibility condition which requires them to possess massless unitary representations with just the same spectra of spins as it follows from the structure of the related higher SDin gauge fields.
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O.D. Dalkarov , K.V. Protasov
№ 65 ON THE NEW VECTOR STATE IN e+e- ANNIHILATION NEAR 2 GeV
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Experimental data obtained recently have confirmed the predicted possibility for an appearance of minimum in behaviour of the e+e- -annihilation into six pions near NN threshold. From the theoretical analysis of the observed irregularity in the framework of coupled channel model existence of narrov vector state corresponding 33 to 2 — S1-state in NN system with the tans about 1800 NeV and the width IS NeV is followed.
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V.A. Karmanov
№ 74 ON DETERMINATION OF THE RELATIVISTIC DEUTERON WAVE FUNCTION WITH THE D(e, e\’ p)n REACTION IN KINEMATICS OF CEBAF
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The kinematical conditions in the domain of the electron accelerator CEBAF for measurement of the D(e,e\’p)n reaction cross section ensuring a qualitative difference from each other of the predictions followed from three variants of the relativistic deuteron wave function are pointed out. At fixed incident energy E and the electron scattering angle Qe these conditions give a relation between the final electron energy E\’ and the proton emission angle Qp. The cross section of the reaction D(e,e\’p)n is calculated both in the impulse approximation and taking into account the final state interaction.
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A.V. Marshakov
№ 76 DOTSENKO-FATEEV REPRESENTATION FOR WESS-ZUMINO-WITTEN MODELS
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The representation of two-dimensional conformal field theories with the Kao-Hocdy current algebra by means of free fields is соnsidered. The primary fields of the SU(2)k Wess-Zuaino-Witten model are expressed in these terms. Dotsenko-Fateev representation for this model is proposed and some correlators are explicitly calculated.
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V.M. Kolybasov , Yu.N. Sokolskikh
№ 94 THE COALESCENCE MODEL AND UGHT FRAGMENTS FROM THE INTERACTIONS OF RELATIVISTIC NUCLEI
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Б.М. Болотовский , В.Е. Воловельский , Н.Н. Мартынов , С.Н. Столяров
№ 101 ПРИБЛИЖЕННЫЕ АНАЛИТИЧЕСКИЕ РЕШЕНИЯ ДЛЯ ВОЛН В ПЕРИОДИЧЕСКИ НЕОДНОРОДНЫХ СРЕДАХ И РАСЧЕТ КОЭФФИЦИЕНТА ОТРАЖЕНИЯ
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Propagation of electromagnetic waves in the one-dimensional medium with periodic modulation of the reflactive index is investigated. By the asymptotic method the problem is rеduced to solution of well-known coupled-wave equations in which the expression for the coupling constant differs from the traditional one. This difference is analyzed and a conclusion is drawn that a modification of the expression for the coupling constant makes it possible to extend the *egion of validity of coupled-wave equations to cover high Bragg resonennoa, The expression for waves in unhomogeneous sparee satisfies Ploquet-Bloch theorem. The results of analitic design for the reflection coefficient and tru results are compared, and its good corresponding is shown in wade range variation of frequency.
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A.. Gonsalez
№ 104 The quantum few-body problem and 1/D method
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Qualitative properties of the ground state and low-lying spectrum of three- and four-body sys?tems are studied on the basis of the 1/D-method, where D is the dimensionality of space. Emphasis is done on model independent properties and re?lation between magnitudes. It is shown that the low-terms of the 1/D expansion often give a good qualitative description of the system, although the 1/D series is known to exhibit poor conver?gence at D*3* Properties as the Post estimate of the ground state energy, the ordering of Wigner multiplets in the spectrum of resonances of the ?He nucleus, and the Hund rule in the two-elec?tron atom follow straightforwardly from the 1/D ‘analysis.
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V.M. Kolybasov , I.S. Shapiro , Yu.N. Sokolskikh
№ 110 SHIFT OF ^(1480) RESONANCE CREATED IN ANTIPROTON ANNIHILATION ON DEUTERIUM AT REST
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Xt la ehovn that obeerved мм ahlft and broadening of th? Ц<14вО) rtJontriM peak, appearing in tha proceea pd ? pnlj^ at J arga racoil proton ?omenta, take place becauae plona froe
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Е.А. Петрухин , А.С. Подсосонный
№ 114 Оптимизация многоискрового источника УФ-предыонизации газового лазера атмосферного давления
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The scheme of multiple-spark source preionizing gase mixture of eleotrodisoharge laser through neok electrode is ooneidered? The influence of homogenity initial electron density profile on laser impulse energy is investigated? Jt is shown the existence of optimal ooaneotion between spark’s spaoing and distanoe bet* ween spark source and active medium? on which maximume laser im? pulse energy is obtained* Numerical estimations for real gase mixtures are derived* The work of traditional multiple ? spark sources is analized and ways to increase spark density up to 102sm»*2 are defined?
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A.M. Semkhatov
№ 127 Operator bosonization and superghost systems on riemann surfaces
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global aspects of bosonization of the ©C/SY» (ghost-suparghoat) systems on Riemann surfaces are discussed* In the phase II boeoniaation proposed recently, operators which break global world-sheet supersymmetry are identified. Alterations of the structure of epurious poles in phase II account for phase II 6A» -correlation functions which differ from those known pre?viously In phase I. It is conjectured that new positions of the spurious poles compensate for the alterations in the phase II structure of the picture changing operators. On the basis of o.arator bosonization of the Sep)/» system, the issue of glo?bal operator description of the SU(2) Wess~2umino~Witten theory and of the parafarmlon theory in higher genus is discussed. It is shown, in particular, that the SU(2) WZW theory does not split globally into parafermiona and an independent scalar field.
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A.A. Vasiliev , V.V. Dadeshidze , I.N. Kompanets , G.A. Lunyakova , A.I. Sinigibsky , S.N. Vereskov
№ 128 Optical pattern recognition using correlation procedure for rotation and scale-invariant feature extraction
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A new approach to the hybrid optical-digital pattern recognition system is proposed which uses correlation procedure for the initial image comparison with the results of its geomet?rical transformation. It is shown that the obtained description of the object to be recognized provides the invariance with respect to the object scale and orientation and that it contains information about the object location in the image being analyzed. The results of computer simulation of the correlation procedure are presented along with its experimental implementation in optical-electronic correlator including liquid crystal space light modulator in the Fourier plane of the optical system.
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V.N. Borkova , V.A. Zubov , A.V. Krajskij
№ 131 Hologranic registration with nonstationary reference wave of one-dimensional optical signal and its analysis
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Method of holographic recording of laser radiation modulated by interaction with an object or medium, Hhose characteristics vary in time and along one of the coordinates are considered. The recording Has realized by the usage of reference nave Hith the linear change of frequency in time and along the coordinate in the registration plane. The scheme permittes the method of double exposure holographic interferometry being realized. The information about temporal, spectral and phase charac?teristics of the object under investigation depending on coordinate can be obtained.
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A.G. Savinkov , A.B. Ryzhov
№ 132 Scattering, green’s functions and symmetries in a total space of dirac monopole fibre bundle
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»ihe scattering wave functions and Green’s functions are found in a total space of Dir-ac moncoole principal bundle. Also there were found hidden symmetries of a charge — Dirac monopole system and those connecting the states relating to different topological cnarges n 2eg.
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Р.. Банн , И.. Ушманн , Г.В. Склизков , А.В. Роде , Н.. Ризви , А.. Риджелей , А.М. Максимчук , К.. Дансон , К.. Гетц , Э.. Ферстер
№ 166 Измерение длин волн рентгеновских спектральных линий с использованием двойного брэгговского отражения
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in this paper the simultaneous Bragg reflection at two crystal plates С both of equal orientation and of equal spacing of net planes) for the accurate measuring of X-ray wavelength is proposed to be used, the accuracy of wavelengths determination AW for this method is discussed and achieves the value 6.10″° . the esperieents oh high precision wavelengths determination L- spectra of copper1 germanium, arsenic, selenium and й-spectra of gadolinium, terbium laser-plasmas plane target in the spectral range 7.5 A — 8.5 Д was carried out with the use of QC1GT0] quasimonotlthie crystal.
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S.N. Karnaukhov , A.V. Subotin
№ 170 Renorvflization in stocyastically quantized qed: local action formalism
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The formalism of the stochastically quantized QED in terms of local action is proposed.The renormaUzation constants and parameters of the theory are calculated in one loop approximation by tools of dimensional reguiarization. The theory is proved gaugeHlnvariant renormalizable. The multiplicative re aormalizabiiity is shown to be possible only at the price of introducing the additional parameter into the kernels of the corresponding Langevin equa tions and noise correlations. In this case the renormalization of the electron mass and the photon wave-function coincides with that of the ordinary QED. The photon setf-?nergy is transverse in the equilibrium limit.
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M.A. Stepanov , M.M. Tsypin
№ 184 Meam field theory and phase diagram for lattice scalar-fermion model
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As ? eisplifi&d ?odel for tfc* Higgs sector of electroweak interaction theory with very heavy TUgga particle and a generation of heavy quarks ve study a lattice ecalar-fsraion theory with tukawa coupling. Hs investigate Its phase diagraa in the noan field approximation. Four phases are» found) with spontaneously broken symmtry (<#>?o), ?ysaetric phase (<#>?0) with aasslesa feralons, syaaetric phase without then and a phase with antiferronagnatic order. Approximate, toraulae for phase transition lines and for are. derived.
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E.L. Feiberg
№ 197 ON DECONFINEMENT OF CONSTITUENT AND CURRENT QUARKS IN NUCLEUS-NUCLEUS COLLISIONS
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Within a rough physical model arguments are presented that in central collision of medium atomic weight (or heavier) nuclei the constituent quark gas can be produced at very low laboratory kinetic energy of projectile, — few hundreds MeV/nuciaon, while at r^5 GeV/ nucleon production of current quark-gluon plasma is not excluded.
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A.V. Maximov , V.P. Silin , M.V. Chegotov
№ 207 On transport theiry in fully ionized plasma
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Abstract ? The transport theory in fully ionized plasma with large ion charge number taking into account the high?frequency electromagnetic field and linear spatial high-order derivatives ( up to the third order ) of electron temperature and pressure is presented. It is shown that transport coefficients of high orders in the expressions for electron fluxes are determined by the change of the isotropic part of the electron distribution function.
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«Pamir».. Colaboration of Experiment
№ 208 A superfamily with unusual hadron characteristics detected in deep lead chamder
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She paper presents experimental characteristics of the superfamily «Elena» with the total measured energy /?? 1700 Tev, detected in deep lead chamber. In the family 23 hadrone with 13fa > 4 Tev are observed, the fraction of family energy tran-efered to hadrona is Qj,* 0.65, the difference between power indices of % -ray ( fi% ? 2) and hadron ( fih ^ 1) spectra is large. The above mentioned features of the family allow to con-‘ eider it as a Centauro-type event. Comparison of its characteristics with calculations on the base of quasiscaling model shows probability to interpret the event as a fluctuation in the development of nuclear cascade in the atmosphereto & small.
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G.V. Ivanenkov , A.N. Lebedev , S.A. Pitkuz
№ 210 SPECTRAL INVESTIGATIONS OF Z-PINCHES
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We present a survey of Z?pinch experiments which have been carried out at P.N. Lebedev Physical Institute starting in 1980. Highcurrent accelerator «Don» (20 GW, 150 kA, 60 ns) was used as a power generator for various plasma loads imploding in the diode. X-ray diagnostics provided the main information about high-density regions of hot plasmas.
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A.V. Leonidov
№ 213 THE THERMODYNAMICS OF QUARK-GLUON PLASMA IN EXTERNAL GLUOMAGNETIC FIELD
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Be calculate the external inhumogeneous gluomagnetic field contribution to the partition function In the one-loop approximation the analysis le extended up to the terms of order Q with respect to external field? Numerically the effect appears to be very small
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M.A. Vasiliev ,
№ 214 HIGHER SPIN ALGEBRAS AND QUANTIZATION ON THE SPHERE AND HYPERBOLOID
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The oscillator-type realization is proposed for the continu?ous set of infinite-dimensional algebras of quantum operators on the two-dimensional sphere and hyperboloid. This realization is typical for infinite-dimensional higher spin algebras related to higher spin gauge theories. It involves the Klein-type operator that emerges nontrivially in the Heisenberg-type commutation re?lations for the oscillators. The invariant trace and bilinear form are constructed. The latter is shown to degenerate for all odd-integer values of the continuous parameter v which parametrizes the class of the algebras under investigation. The degene?ration points are shown to correspond to ordinary finite-dimen?sional matrix algebras and superalgebras. Possible applications of these results to higher spin gauge theories are discussed. In particular, it is noted that the deformation parameter v can be interpreted as a vacuum value of some auxiliary scalar field in an appropriate higher spin gauge theory.
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