M.M. Denisov , V.P. Makarov ,
№ 2 ON ТНE THEORY OF EXCITON STARK EFFEСT
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The exciton Stark effect is investigated within the framework of standard perturbation theory and without use of any particular exciton model. It is shown that the transverse-longitudinal splitting and the effect of the finite exciton vector result in the essential pecularities in the exciton Stark spent rum. The concrete calculations are made for dipole excitons is crystal CuCl investigated experimentally
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L.N. Bulajevskii , A.I. Rusinov ,
№ 24 THE ABSENCE OF THE PARAMAGNETIC LIMIT FOR НС2(II)OF LAYЕRЕD SUPERCONDUCTORS WITH LATTICES OF PYROELECTRIC CLASS
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A.D. Linde ,
№ 25 EXTERNAL CURRENTS,INCREASING OF DENSITY AND SYMMETRY BREAKING IN GAUGE THEORIES
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The presence of a strong external fermion current, is shown to lead to symmetry restoration in gauge theories. The excess of fermions over antifermions («weak» charge density), on the contrary, increases symmetry breaking
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V.P. Frolov , V.I. Hlebnikov ,
№ 27 GRAVITATIONAL FIELDS OF RADIATING SYSTEMSI .TWISTING FREE TYPE D MEТR1СS
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V.B. Serebrennikov , A.K. Shabad , Ya.A. Skorodinsky ,
№ 30 SO(4) AS A GROUP OF BROKEN HIDDEN SYMMETRY
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For every bounded trajectory of a particle in arbitrary central field of force a unifornly rotating reference frame may be chosen in which this trajectory becomes closed. This circumstance makes it meaningful to introduce a nonconserving analog of the Bunge-Lens-Laplace vector A called the «precession vector» and to build the SO(4) Poisson brackets algebra with it [2]. The corresponding hidden symmetry is minimally broken in the sense that the vector A keeps its length constant and rotates with constant angular speed. In the present paper the infinetasimal canonical transfornations(from the 0(4)-algebra) caused by the vector Tare integrated up to the finite canonical SO(4)-group transformations. The (bounded motions) phase space of the 3-dimenaional central problem is canonically mapped into a product of two three-dimensional spheres in a four-dimensional space each and the S0(4) acts linearly by rotations on them. The Hamiltonian formalism in this curved phase manifold is obtained. The particle moves with a constant speed along a diametral circle, this circle processing with a constant angular speed. The generators of 0(4,1) algebra axe also given
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M.V. Fedorov , V.P. Makarov ,
№ 35 OH A THIN STRUCTURE OF ATOMIC SPECTRA IN AN INTENSE RESONANCE ELECTROMAGNETIC FIELD
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An interaction of an atom with an intense resonance radiation field is considered. Quasi-energy levels are found which can differ essentially from the usual thin structure of atomic levels at moderate intensities. Spontaneous emission of such a system is considered and an interaction of an atom with a depolarized field is investigated in detail. In the latter case some specific shifts and broadening of emission or absorption lines depending essentially on resonance field polarization and coherency are predicted
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R.V. Somov ,
№ 36 X-RAY HEATING OF A LOW-TEMPERATURE REGION IN CHROMOSHFEIRIC FLARES
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Part of the proper X-ray emission of a flare is absorbed in chromosphere and heats the region which creates an optical (in particular H) flare emission. The heating of chromosphere by X-ray emission may be responsible for the diffuse halo around the flare kernels. The optical emission of flare kernels, whose main sources of heating are energetic particles and/or thermal fluxes, may be also increased. By simple model calculations the present paper discusses the possibility of such effects for two flares in August 1972
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A.A. Komar , G.I. Orlova , M.I. Tretyakova , M.M. Chernyavsky ,
№ 48 EVENTS OF POSSIBLE ASSOCIATED PRODUCTION OF ТНE СНАRMED PARTICLES IN NUCLEAR EMULCION
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In the course of scanning the nuclear emulsions, exposed to the 200 0ev/o proton bean, two stars were found in which single electron (ox positron) ваше out nearly from the star centre (with uncertainty about 3). There is somе evidence of the simultaneous production in the мм star of the short-lived particle with the mass in the vicinity of 2 ват. these events may be interpreted as the manifestation of the associated production of the chained meson and baryon. The probability that these events axe generated by the semileptonie (leptonic) decays of known particles or result from the nonebeervation of one of the Dalits pair component was estimated and turned out to be very small
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V.P. Frolov ,
№ 49 GRAVITATIOJAL FIELD OF RADIATING SYSTEMS IT. TWISTING FREE TYPE II METRICS
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D.S. Chernavskii , T.I. Kanarek , E.I. Volkov ,
№ 53 RESULTS OF MULTICLUSTER THEORY ОF НADRON INTERACTIONS AT 70 Gev АND 200 Gev. Single-particle disrtributiens
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The paper presents quantitative results оt investigation of multiple hadron production within the framework of the multiperipheral cluster model based on the Bethe-Salpeter (B.S.) equation [1,2]. The method of simulation of events enabled us to carry out the most detailed comparison with experiment and to analyse some mechanisms of particle production. He have shown that our model leads to a good unified description of properties of inelastic processes for a wide range of energies
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A.K. Atakhodzaev , l.m. Sabirov , T.M. Utarova ,
№ 58 THE SPEKTRUM OF DEPOLARIZED LIGHT SCATTERING IN CRITICAL MIXTURES
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Temperature dependence of the spectrum of depolarized light scattering in a uniform phase of critical mixtures of n-dodecane — dichlordiethyl ether and n-hexane-nitrobenzene is studied experimentally. The depolarized scattering spectrum was found to narrow dozens of times in the temperature interval from 30° to 1° from the critical temperature of exfoliation in both the mixtures. The results obtained are discussed
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Yu.I. Grineva , V.I. Safronova , A.H. Urnov ,
№ 58a CALCULATIONS OF THE ENERGY, AUTOIONIZATION RATES AND RADIATIVE TRANSITION PROBABILITIES FOR MULTIPLY-CHARGED IONS
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V.V. Dodonov , I.A. Malkin , V.I. Man’ko ,
№ 60 COHERENT STATES AND GREEN FUNCTIONS OF RELATIVISTIС QUADRATIC SYSTEMS
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The explicit expressions for the Green functions of arbitrary relativistic quadratic quantum systems are obtained by the method of integrals of the motion and coherent states method. The normal forms of the relativistic quadratic hamiltonians are briefly discussed. The important special cases, such as the motion of Dirac and Klein-Gordon charged particle in the fields of a plane wave and in the uniform electric and magnetic fields of nekind are investigated in detail
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A.E. Salomonjvitch , S.V. Salomonov , A.S. Khaikin , V.S. Kovalev , A.A. Kobsev ,
№ 63 SATELLITE MEASUREMENTS OF SUBMILLIMETER RADIATION ОF ТHE EARTH ATMOSPHERE
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На ИСЗ «Космос-669» 26-31 июля 1974 г. проведена непрерывные измерения излучения атмосферы Земли в двух спектральных участках субмиллиметрового диапазона (вблизи 100 мкм и 500 мкм). Детекторы радиометра охлаждались до температуры жидкого гелия. Получено географическое распределение яркостной температуры излучения при наблюдении в надир. Показано, что основной вклад в излучение на волнах — 500 мкм вносят тропосфера (слой между I и 5 км), а на волнах ~ 100 мкм — нижняя стратосфера (слой между 10 и 26 км). Обнаружены крупномасштабные вариации яркости, связанные с областями различного атмосферного давления в приземных, слоях, а также компактные области резких уменьшений яркости, положение которых коррелирует с областями мощных восходят токов влажного воздуха
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I.P. Tindo , A.I. Shuryghin , W.. Steffen ,
№ 64 POLARIZATION OF X-RAY EMISSION OF SOLAR FLARES IH JULY 1974
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Preliminary results of polarization measurements at three solar flares of July 5 and 6, 1974, are given. The measurements were performed at ≈15 keV with Thomson-scattering polarimeter on the «Intercosmos 11» satellite. It decay phase of July 5 flare we obtained P ≈ 2.7%, which did not exclude contribution of some non-thermal processes. At flares of July 6 we found P=1.4% and P=1.1%, respectively, both values lying below the threshold of detection
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I.L. Beigman , A.E. Bor-Ramensky , B.K. Chemodanov , V.L. Danilov , G.M. Grechko , V.D. Nefedov , A.I. Pakhomov , L.A. Sen’ko , A.I. Shurygin , V.A. Slemzin , I.P. Tindo , L.A. Vainshtein ,
№ 65 A GRAZING INCIDENCE X-RAY TELESCOPE ABOARD THE ORBITAL STATION «SALYUT-4»
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Two X-ray telescopes were installed aboard the orbital station Salyut-4 to study discrete sources and X-ray diffuse background. In this report we describe briefly the grazing incidence X-ray telescope RT-4, and the first preliminary results are given which were obtained during the first mission of «Salyut-4» in January-February, 1975
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Yu.I. Grineva , V.V. Korneev , V.V. Krutov , S.L. Mandelstam , I.A. Sylvester , L.A. Vainstein , A.M. Urnov , I.A. Zhitnik ,
№ 66 SOLAR FLARE SPECTRA IN THE VICINITY OF THE MG XII RESONANCE LINE AT 8.42
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The theoretical analysis made it possible to reveal the ( MgXIl) satellite lines which were attributed to the transitions in the Mgll ion of the type: The shortwavelength group of satellites hare been observed. The satellite-to-resonance line and line-to-continuum ratio have been used to obtain the electron temperature of the hot1 plasma volume which proved to be of the order 6×10^ °K. The ion temperature derived from the Doppler width of the resonance line was about 8×106 °K
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S.I. Nikolsky , V.P. Pavluchenko , E.L. Feinberg , V.I. Yakovlev ,
№ 69 HEW PARTICLES IN SUPERHIGH ENERGY CASCADES
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Experiments on superhigh energy hadronic cascades (total energy above 100 ТеV) in lead absorber reveal an anomalous increase of attenuation length which say be as indication of contribution of some new hadrons with interaction features somewhat different from those of usual hadrons (smaller inelasticity or/and cross section, or/and instability with life time ≥/10²-10 sec) compatible with larger mass (≥ 2 GeV). Possible statistical model mechanism of production of such particles explaining threshold behaviour of the phenomenon is discussed
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K.. Betzler , B.G. Zhurkin , A.L. Karuzskii , B.M. Balter ,
№ 71 MAGNETOOSCILLATIONS OF THE EHD-LUMINESCENCE IN PURE GERMANIUM
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V.I. Ginzburg , V.S. Ptushkin ,
№ 72 SOME QUESTIONS CONNECTED WITH THE PROBLEM OF COSMIC RAY ORIGIN
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D.I. Khomskii , A.N. Kocharjan ,
№ 88 VIRTUAL LEVELS WITH VARIАВLE AND STATE IN ELECTRONIC PHASE TRANSITIONS
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Е.С. Фрадкин , Д.М. Штейнгардт ,
№ 90 МЕТОД КОНТИНУАЛЬНОГО ИНТЕГРИРОВАНИЯ ДЛЯ ИССЛЕДОВАНИЯ РЕШЕТОЧНЫХ МОДЕЛЕЙ
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A new method for solving or studying Ising-like models is developed. Calculating partition and correlation functions and studying unsoluable models are possible in a simple way straight from spin interaction hamlltonians. This method is demonstrated here for 1-dioentional systems. In the next paper of this series some solvable and unsolvable 2 and 3- dimentional systems will be considered. Some unsolvable models can be solved by this new method. All the models can h* solved for a finite lattice with any boundary conditions, (continued on page 46)
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E.V. Ivanova , I.A. Malkin , V.I. Man»ko ,
№ 94 RADIATION OF CHARGED PARTICLES IN NONSTATIONARY FIELDS
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In this paper by means of the coherent-state method the formulas ore obtained for calculating at an arbitrary moment of time the radiation power of a nonstationary quantum system of N charged particles whose Hamiltonian is a general quadratic form with respect to coordinates and momenta. The transitions are discussed between the coherent states and the Fock states of this system. The radiation is calculated both in the dipole approximation and in the general case when it is necessary to take into account the exponential factors of the vector potential of the radiation field
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A.V. Gurevich ,
№ 95 NONLINEAR RESONANCE INSTАВILIТY OF PLASMA IN THE REFLECTION REGION OF AN ORDINARY ELECTROMAGNETIC WAVE
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The dissipation of energy of an ordinary wave due to its linear transformation at small inhomogeneities of concentration N in the region if high-frequency plasma resonances is determined. It is shown that as soon as the concentration perturbations N exceed the threshold value NTF, they became unstable and increase sharply. The threshold values NTF fall with the increase of the wave intensity and with the decrease of plasma concentration gradient. Instability leads to the destruction of a smooth plasma layer in the resonance region. The inhomogeneous structure arisen is the cause of an intense energy absorption both of the wave inducing perturbation and of any other ordinary wave reflected in the perturbed region. It is shown that the theory under consideration is in agreement with the results of experiments on artificial modification of ionosphere. It permits n simultaneous treatment of the observed anomalous absorption (wide-band attenuation) and field-sligned scattering of radiowaves
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A.I. Nikishov , N.V. Pichkurov ,
№ 100 DIRECT E+E- PAIR PRODUCTION BY MUONS
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The differential cross section for electron-positron pair production by a muon colliding with an atomic nucleus is obtained. Integration of this cross section over the directions of the electron and positron confirms the result obtained earlier by Racah. Assuming that the screening functions Ф1 and Ф2, introduced by Bethe and Heitler are equal and can be approximated analytically as proposed in [1],we obtain the screening correction for the total cross section
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D.K. Akulina ,
№ 101 » The use of microwave resonators for determination of plasma density».
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G.S. Voronov ,
№ 107 New possibilies of laser applications to plasma diagnostics.
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A.A. Samokhin , A.I. Voronin ,
№ 109 On the role of resonances in multiphoton molecular transitions in an intense optical field.
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K.. Abbel-Hady , A.A. Ovchinnikov , A.N. Sokol , V.N. Sorokin , D.Ya. Zel’dovich ,
№ 119 Absolute calibration of the distributed temperature sensor of optical path fluctuations.
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A.D. Linde ,
№ 123 Dynamical simmetry restoraration and constraints on massee and coupling constants in gauge theories.
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V.L. Ritus ,
№ 129 The lagrange fuction of an intensive electromagnetic field and quantum electrodynamics at small distances.
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M.V. Fedorov , A.E. Kasakov , V.P. Makarov ,
№ 143 REZONANCE IONIZATION OF ATOMS
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V.V. Dodonov , I.A. Malkin , V.I. Man’ko ,
№ 151 ON NORMAL COORDINATES IN THE PHASE SPACE OF QUANTUM SYSTEMS
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A new symmetry of the equations for the Green functions analogues of quantum systems introduced in [1] is discossed. The analogues of normal coordinates in the phase space of quantum systems are considered. New formulae for the stationary Green functions of the Schrodinger equation in the coherent states representation are obtained. Some examples are considered
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M.B. Galanin , Sh.D. Khan-Magometova , Z.A. Chizhikova ,
№ 152 ENERGY TRANSFER IN TETRAGENE-BOPED ANTHRACENE CRYSTALS
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Rise and decay curves of tetracene-doped anthracene crystals fluoresoence have been investigated with single-photon counting technique It had been shown that energy transfer in due to both free and trapped excitons
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A.D. Linde ,
№ 154 SPONTANEOUS SYMMETRY ВREAKING AND STATISTICAL BOOTSTRAP
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It is shown that the possibility of the existence of a limiting temperature does not prevent the high-temperature phase transition with symmetry restoration in the gauge theories
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V.A. Fateyev , A.S. Schwarz , Yu.S. Tyupkin ,
№ 157 TOTOLOGICALLY NON-TRIVIAL PARTICLE3 IN QUANTUM FIELD THEORY
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A.D. Linde ,
№ 166 SYMMETRY BEHAVIOR IN EXTERNAL FIELDS
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It is noted that in the most of the realistic gauge theories with neutral currents a phase transition with symmetry restoration takes place not due to a magnetic field but due to mаssivе vector fields created simultaneously by the magnetic field sources. Symmetry behaviour in the theories without neutral currents in the presence of magnetic and laser fields is also discussed
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I.A. Malkin , V.I. Man’ko , A.P. Shustov ,
№ 169 ТНE COHERENT STATES AND THE QUАSIENERGY SPECTRA ОF АRBITRARY QUADRATIC SYSTEMS
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G.A. Abkaryan , I.N. Harootunian ,
№ 170 RADIO-WAYE EMISSION OF THE RELATIVISTIC CHARGED PARTIOLE MOVING THROUDH THE SUPERHEATED SUPERCONDUCTING MEDIUM IN THE MAGNETIC FIELD
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Radio-wave radiation emitted by the relativistic charged article traversing charged in the magnetic field is discussed
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M.I. Adamovich , M.M. Chernjavskii , I.M. Dremin , A.M. Garahkovich , S.P. Kharlamov , V.G. Larionova , M.I. Tretjakova , E.I. Volkov , P.R. Yagudina ,
№ 172 Clusters and the rapidity interval method.
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E.V. Kurmyshev , I.A. Malkin , V.I. Man’ko ,
№ 173 Time-energy uncertainty relation for nonstationary quantum systems.
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L.I. Goodzenko , T.M. Makhviladze , M.E. Saritchev ,
№ 174 LIGHT INDUCED GAS-LIQUID PHASE TRANSITIOM
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E.V. Doktorov , I.A. Malkin , V.I. Man’ko ,
№ 176 DYNАMICAL SYMMETRY OF VIBRONIC TRASITIONS IN POLYATOMIC MOLECULES AND THE FRANCK-CONDON PRINCIPLE. II.
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for the quadratic systems the Rranck-Condon factors for vibronic transitions in polyatomic molecules with N vibrational degrees of freedom are evaluated in terms of the Hermite polynomiale of several variables. Various particular cases are considered and approximate formulae arе obtained which correspond to small mixing parameters. The way of the exact calculation of the geometrical configuration of a molecule in en excited electronic state (in the harmonic oscillator approximation) is discussed. Due to existence of the dynamical symmetry group for the problem a number of new sum rules for the overlap integrals and recurrence relations for them are obtained. As an example, the calculation of relative intensities of same bands in the 2600 A -system of the abnorption spectrum of benzene is given
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E.S. Fradkin , M.Ya. Palchik ,
№ 180 INTRODUCTION TO CONFORMAL FIELD THEORY
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E.S. Fradkin , M.Ya. Palchik ,
№ 181 INTRODUCTION TO CONFORMAL FIELD THEORY. II.WARD IDENTITIES
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