259 research outputs found

    GHOST COHOMOLOGIES AND HIDDEN SPACE–TIME SYMMETRIES

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    We observe and study new nonlinear global space-time symmetries of the full ghost + matter action of RNS superstring theory. We show that these surprising new symmetries are generated by the special worldsheet currents (physical vertex operators) of RNS superstring theory, violating the equivalence of superconformal ghost pictures. We review the questions of BRST-invariance and nontriviality of picture-dependent vertex operators and show their relation to hidden space-time symmetries and hidden space-time dimensions. In particular, we relate the space-time transformations, induced by picture-dependent currents, to the symmetries observed in the 2T physics approach. © World Scientific Publishing Company.Bars I, 1999, PHYS REV D, V59, DOI 10.1103-PhysRevD.59.045019; Bars I, 1999, PHYS REV D, V59, DOI 10.1103-PhysRevD.59.125004; Bars I, 1999, PHYS LETT B, V457, P275, DOI 10.1016-S0370-2693(99)00582-1; KLEBANOV IR, 1991, MOD PHYS LETT A, V6, P3273, DOI 10.1142-S021773239100378X; KLEBANOV IR, 1993, PHYS REV LETT, V71, P3243, DOI 10.1103-PhysRevLett.71.3243; Kogan II, 2003, INT J MOD PHYS A, V18, P1827, DOI 10.1142-S0217751X03013715; LIAN BH, 1991, PHYS LETT B, V254, P417, DOI 10.1016-0370-2693(91)91177-W; Polyakov D, 2005, INT J MOD PHYS A, V20, P2603, DOI 10.1142-S0217751X05020999; Polyakov D, 2002, PHYS REV D, V65, DOI 10.1103-PhysRevD.65.084041; POLYAKOV D, IN PRESS INT J MOD P; Polyakov D, 2005, INT J MOD PHYS A, V20, P4001, DOI 10.1142-S0217751X05024274; VERLINDE E, 1987, PHYS LETT B, V192, P95, DOI 10.1016-0370-2693(87)91148-8; WITTEN E, 1992, NUCL PHYS B, V373, P187, DOI 10.1016-0550-3213(92)90454-J57

    Fluid dynamics of NSR strings

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    We show that the renormalization group flows of the massless superstring modes in the presence of fluctuating D-branes satisfy the equations of fluid dynamics. In particular, we show that the D-brane's U(1) field is related to the velocity function in the Navier-Stokes equation while the dilaton plays the role of the passive scalar advected by the turbulent liquid. This leads us to suggest a possible isomorphism between the off-shell superstring theory in the presence of fluctuating D-branes and the fluid mechanical degrees of freedom. © World Scientific Publishing Company.D'Hoker E, 2002, NUCL PHYS B, V636, P3, DOI 10.1016-S0550-3213(02)00431-5; FEIGENBAUM MJ, 1978, J STAT PHYS, V19, P25, DOI 10.1007-BF01020332; FRADKIN ES, 1985, NUCL PHYS B, V261, P1, DOI 10.1016-0550-3213(85)90559-0; FRIEDAN D, 1986, NUCL PHYS B, V271, P93; GAWEDZKI K, 1995, PHYS REV LETT, V75, P3834; Gubser SS, 1998, PHYS LETT B, V428, P105, DOI 10.1016-S0370-2693(98)00377-3; KNIZHNIK VG, 1989, USP FIZ NAUK+, V159, P401, DOI 10.3367-UFNr.0159.198911a.0401; KOBA Z, 1969, NUCL PHYS B, VB 12, P517, DOI 10.1016-0550-3213(69)90071-6; Kogan I, 2003, PHYS ATOM NUCL+, V66, P2062, DOI 10.1134-1.1625749; Kogan II, 2003, INT J MOD PHYS A, V18, P1827, DOI 10.1142-S0217751X03013715; KRAICHNA.RH, 1968, PHYS FLUIDS, V11, P945, DOI 10.1063-1.1692063; KRAICHNAN RH, 1994, PHYS REV LETT, V72, P1016, DOI 10.1103-PhysRevLett.72.1016; Maldacena J M, 1998, ADV THEOR MATH PHYS, V2, P231, DOI DOI 10.1023-A:1026654312961; Polyakov A, 2000, NUCL PHYS B, V581, P116, DOI 10.1016-S0550-3213(00)00183-8; Polyakov AM, 1997, NUCL PHYS B, V486, P23, DOI 10.1016-S0550-3213(96)00601-3; Polyakov D, 2002, PHYS REV D, V65, DOI 10.1103-PhysRevD.65.084041; POLYAKOV D, HEPTH0401009; VERLINDE E, 1987, PHYS LETT B, V192, P95, DOI 10.1016-0370-2693(87)91148-8; Witten E., 1998, ADV THEOR MATH PHYS, V2, P253, DOI DOI 10.1016-S0370-1573(99)00083-644

    Wilson-Polyakov surfaces and M-theory branes

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    In this paper, we study the M-brane description of the Wilson-Polyakov surfaces in six-dimensional (2, 0) field theory at finite temperature. We investigate the membrane solution dual to a straight Wilons-Polyakov surface and compute the interaction potential between two parallel straight strings by using AdS/CFT correspondence. Furthermore we discuss the M5-brane solutions dual to various Wilson-Polyakov surfaces. Finally we obtain a universal result about M5-brane solutions in generic backgrounds.Physics, Particles & FieldsSCI(E)2ARTICLE5nul

    New superstring isometries and hidden dimensions

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    We study the hierarchy of hidden space-time symmetries of noncritical strings in RNS formalism, realized nonlinearly. Under these symmetry transformations the variation of the matter part of the RNS action is canceled by that of the ghost part. These symmetries, referred to as the α-symmetries, are induced by special space-time generators, violating the equivalence of ghost pictures. We classify the α-symmetry generators in terms of superconformal ghost cohomologies Hn ∼ H -n-2(n andgt; 0) and associate these generators with a chain of hidden space-time dimensions, with each ghost cohomology Hn ∼ H -n-2 contributing an extra dimension. Namely, we show that each ghost cohomology Hn ∼ H-n-2 of noncritical superstring theory in d-dimensions contains d + n + 1 α-symmetry generators and the generators from Hk ∼ H-k-2, 1 andlt; k andlt; n, combined together, extend the space-time isometry group from the naive SO(d, 2) to SO(d + n, 2). In the simplest case of n = 1 the α-generators are identified with the extra symmetries of the 2T-physics formalism, also known to originate from a hidden space-time dimension. © World Scientific Publishing Company.Bars I, 1999, PHYS REV D, V59, DOI 10.1103-PhysRevD.59.045019; Bars I, 1999, PHYS REV D, V59, DOI 10.1103-PhysRevD.59.125004; Bars I, 1999, PHYS LETT B, V457, P275, DOI 10.1016-S0370-2693(99)00582-1; Bars I, 1997, PHYS REV D, V55, P2373, DOI 10.1103-PhysRevD.55.2373; KLEBANOV IR, 1991, MOD PHYS LETT A, V6, P3273, DOI 10.1142-S021773239100378X; KLEBANOV IR, 1993, PHYS REV LETT, V71, P3243, DOI 10.1103-PhysRevLett.71.3243; LIAN BH, 1991, PHYS LETT B, V254, P417, DOI 10.1016-0370-2693(91)91177-W; Polyakov D, 2007, INT J MOD PHYS A, V22, P1375, DOI 10.1142-S0217751X07035148; Polyakov D, 2007, INT J MOD PHYS A, V22, P2441, DOI 10.1142-S0217751X07036269; Vafa C, 1996, NUCL PHYS B, V469, P403, DOI 10.1016-0550-3213(96)00172-1; WITTEN E, 1992, NUCL PHYS B, V373, P187, DOI 10.1016-0550-3213(92)90454-J44

    Geração radiativa de repulsão vetorial para quarks leves

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    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Física, Florianópolis, 2014Abstract: We apply a non-perturbative analytical method, known as the Optimized PerturbationTheory (OPT), to the Polyakov-Nambu-Jona-Lasinio (PNJL) model in order to investigate physical quantities associated with the QCD phase transitions. We consider the Taylor expansion of the pressure in powers of µ/T obtaining the second cumulant (c2) which is associated to the quark number susceptibility. We discuss how the OPT nite Nc radiative (quantum) corrections induce a contribution to the pressure which behaves as a vector repulsion even when such a channel is absent in the original classical potential. Our results are then compared with the ones furnished by lattice QCD simulations and by the large-Nc approximation showing that, physically, the OPT results resemble those furnished by the latter approximation when a repulsive vector channel is explicitly included in the classical potential. In this case, both approximations fail to correctly describe the Stefan-Boltzmann limit at high temperatures. We discuss how this problem can be circumvented by taking the couplings to be temperature dependent so as to simulate the phenomenon of asymptotic freedom. Since this is the first time the OPT is applied to the PNJL we also discuss many technicalities associated with the evaluation of two loop (exchange) diagrams.Neste trabalho o método analítico não perturbativo conhecido como Teoria de Perturbação Otimizada (OPT) é aplicada ao modelo de Polyakov-Nambu-Jona-Lasinio (PNJL) para que quantidades físicas, associadas com as transições de fase da QCD, possam ser calculadas. A expansão da pressão em potências de µ/T é considerada para obter o segundo cumulante (c2) que é uma quantidade relacionada com a susceptibilidade do número de quarks. Primeiramente discutimos como as correções radiativas de Nc finito geradas pela OPT produzem uma contribuição que se comporta como um termo vetorial repulsivo mesmo quando este tipo de canal está ausente no potencial clássico original. Em seguida, nossos resultados são comparados com aqueles fornecidos pelas simulações na rede e também pela aproximação de Nc grande(LN). Fisicamente, os resultados da OPT são similares aqueles fornecidos pela aproximação LN quando um canal vetorial repulsivo é explicitamente incluido no potencial clássico. Neste caso, nenhuma destas aproximações analíticas produz corretamente o limite de Stefan Boltzmann para altas temperaturas. Contudo, nossos resultados sugerem como estes problemas podem ser contornados tomando-se as constantes de acoplamento como sendo dependentes da temperatura, de maneira que o fenômeno da liberdade assimptótica possa ser simulado. Esta é a primeira vez que a OPT é aplicada ao modelo de PNJL e por isto vários aspectos técnicos relacionados com o cálculo de diagramas de dois laços são também aqui apresentados

    Technical Physics V. 49, I. 03

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    Technical Physics -- March 2004 Volume 49, Issue 3, pp. 283-377 THEORETICAL AND MATHEMATICAL PHYSICS Diffusion of a Low-Soluble Impurity in a Solid Matrix V. P. Gladkov, V. A. Kashcheev, V. I. Petrov, and I. M. Rumyantsev pp. 283-286 Full Text: PDF (51 kB) GASES AND LIQUIDS Nonlinear Periodic Waves on the Charged Surface of a Deep Low-Viscosity Conducting Liquid D. F. Belonozhko and A. I. Grigor'ev pp. 287-295 Full Text: PDF (122 kB) SOLIDS Effect of Grain-Boundary Electron Scattering in Magnetic Layers on the Magnetoresistive Ratio of a Polycrystalline Sandwich under Transverse Charge Transfer N. N. Svirkova pp. 296-301 Full Text: PDF (80 kB) Effective Electron Mass in Melts of Aluminum, Cerium, and Al–3 at.% Ce Binary System A. I. Kiselev, L. A. Akashev, and V. I. Kononenko pp. 302-305 Full Text: PDF (55 kB) SOLID-STATE ELECTRONICS Nanostructure and Conductivity of Thin Metal Films I. V. Antonets, L. N. Kotov, S. V. Nekipelov, and Ye. A. Golubev pp. 306-309 Full Text: PDF (221 kB) Electrophysical Properties of GaAs Layers and the Characteristics of Fast Particle GaAs Detectors V. A. Bespalov, A. V. Vorontsov, A. A. Gorbatsevich, V. I. Egorkin, G. P. Zhigal'skii, É. A. Il'ichev, A. V. Kulakov, B. G. Nalbandov, V. S. Pantuev, V. N. Rasputnyi, Yu. N. Sveshnikov, and S. S. Shmelev pp. 310-317 Full Text: PDF (110 kB) Magnetoresistance of a Planar Nanobridge K. A. Zvezdin and A. V. Khvalkovskii pp. 318-324 Full Text: PDF (82 kB) Effect of gamma Radiation from 60Co on the Formation of Metal Contacts to GaAs (AlxGa1 – xAs) Structures O. Yu. Borkovskaya, N. L. Dmitruk, I. B. Ermolovich, R. V. Konakova, and V. V. Milenin pp. 325-329 Full Text: PDF (143 kB) Magnetization Reversal in Amorphous Gadolinium–Cobalt Films with a Radial Gradient of Magnetic Properties V. E. Ivanov and G. S. Kandaurova pp. 330-334 Full Text: PDF (98 kB) OPTICS, QUANTUM ELECTRONICS Low-Temperature Photoluminescence in AgGaSe2 Single Crystals I. V. Bodnar' and M. V. Yakushev pp. 335-337 Full Text: PDF (51 kB) Optical Properties of CdF2 in a Wide Energy Range A. I. Kalugin and V. V. Sobolev pp. 338-341 Full Text: PDF (58 kB) ELECTRON AND ION BEAMS, ACCELERATORS Doping of Graphite by an Alkaline-Earth Metal to Reduce the Work Function A. S. Baturin, K. N. Nikolski, A. I. Knyazev, R. G. Tchesov, and E. P. Sheshin pp. 342-344 Full Text: PDF (53 kB) Energy Spectra and Temperature Distributions of Clusters Produced During Ion-Beam Sputtering of Metals V. I. Matveev and S. A. Kochkin pp. 345-351 Full Text: PDF (99 kB) EXPERIMENTAL INSTRUMENTS AND TECHNIQUES Properties of Powders Produced by Evaporating CeO2/Gd2O3 Targets Exposed to Pulsed–Periodic Radiation of a CO2 Laser Yu. A. Kotov, V. V. Osipov, O. M. Samatov, M. G. Ivanov, V. V. Platonov, A. M. Murzakaev, E. I. Azarkevich, A. I. Medvedev, A. K. Shtolts, and O. R. Timoshenkova pp. 352-357 Full Text: PDF (227 kB) SHORT COMMUNICATIONS Formation of Silicon Nanospheres in Molten Aluminum Yu. P. Volkov, V. B. Baiburin, and N. P. Konnov pp. 358-360 Full Text: PDF (335 kB) Effect of the Lattice Structure of Nickel Nanoparticles on Their Practical Magnetization A. P. Shpak, A. B. Shevchenko, and A. B. Mel'nik pp. 361-362 Full Text: PDF (37 kB) Magnetization Vector Field in a Uniaxial Ferromagnetic Film L. I. Antonov, A. S. Zhukarev, P. A. Polyakov, and D. G. Skachkov pp. 363-364 Full Text: PDF (34 kB) Estimating the Spectrum of a Component of a Digital Signal Containing an Intense Interference V. A. Dvinskikh pp. 365-366 Full Text: PDF (33 kB) Equal-Permittivity States Induced in a Ferroelectric A. M. Prudan, A. B. Kozyrev, and A. V. Zemtsov pp. 367-370 Full Text: PDF (61 kB) Simulation of an Electron Avalanche in Helium A. N. Tkachev and S. I. Yakovlenko pp. 371-377 Full Text: PDF (125 kB)Archived web conten

    Technical Physics V. 49, I. 10

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    Technical Physics -- October 2004 Volume 49, Issue 10, pp. 1249-1389 Photoelectron Spectroscopy of Atomic Core Levels on the Silicon Surface: A Review M. V. Gomoyunova and I. I. Pronin pp. 1249-1279 Full Text: PDF (711 kB) THEORETICAL AND MATHEMATICAL PHYSICS Simple Relationships for Determining the Asymmetry of Solar Rotation Yu. V. Vandakurov pp. 1280-1283 Full Text: PDF (57 kB) GAS DISCHARGE, PLASMA Study of the Microscopic Characteristics of a Repetitive Microsecond Barrier Discharge S. N. Buranov, V. V. Gorokhov, V. I. Karelin, and P. B. Repin pp. 1284-1288 Full Text: PDF (104 kB) Effect of Convection and Heat Conduction on the Laser Gain in a Nonequilibrium Recombinational Hydrogen Wall Plasma A. P. Kuryshev and S. A. Kozlov pp. 1289-1295 Full Text: PDF (92 kB) SOLIDS Plastic Strain Localization in Fe–3%Si Single Crystals and Polycrystals under Tension S. A. Barannikova, V. I. Danilov, and L. B. Zuev pp. 1296-1300 Full Text: PDF (131 kB) Stability of the Mechanical Behavior of an Arched TiNi Strip under the Conditions of the Constrained Shape Memory Effect G. A. Malygin and M. A. Khusainov pp. 1301-1307 Full Text: PDF (89 kB) Nanoprecipitation Resulting from the Decomposition of Supersaturated Solid Solutions in the Tracks of Swift Heavy Ions D. N. Korolev and A. E. Volkov pp. 1308-1312 Full Text: PDF (111 kB) SOLID-STATE ELECTRONICS Dispersion Properties of Cyclotron Waves in Periodic Semiconductor–Insulator Structures A. A. Bulgakov and V. K. Kononenko pp. 1313-1318 Full Text: PDF (350 kB) OPTICS, QUANTUM ELECTRONICS Sensitivity of Prismatic Integrated Optical Sensors under Nearly Critical Conditions I. U. Primak pp. 1319-1324 Full Text: PDF (85 kB) Light Scattering by the Apical Oxygen Sublattice in a Thin Layer of YBaCuO Crystal V. V. Rumyantsev and Yu. G. Pashkevich pp. 1325-1328 Full Text: PDF (61 kB) Acoustooptic Nonpolar Light Controlling Devices and Polarization Modulators Based on Paratellurite Crystals S. N. Antonov pp. 1329-1334 Full Text: PDF (71 kB) A Source of UV Radiation Based on Pulsed Discharge in a Xe–NaCl Mixture R. B. Riives, E. A. Svetlichnyi, Yu. V. Zhmenyak, V. A. Kel'man, and Yu. O. Shpenik pp. 1335-1338 Full Text: PDF (54 kB) ACOUSTICS, ACOUSTOELECTRONICS The Theory of Coupled Waves as a Universal Method for Designing Devices Operating on Surface Acoustic Waves V. F. Dmitriev pp. 1339-1348 Full Text: PDF (147 kB) RADIOPHYSICS Surface Electromagnetic Waves at the Interface between Two Dielectric Superlattices A. A. Bulgakov, A. V. Meriutz, and E. A. Ol'khovskii pp. 1349-1353 Full Text: PDF (126 kB) A Method for Calculating the Characteristics of Surface Magnetostatic Waves in Anisotropic Ferromagnetic Films V. V. Shagaev pp. 1354-1359 Full Text: PDF (81 kB) SURFACES, ELECTRON AND ION EMISSION Emissivity of Powders Prepared from Nanoporous Carbon V. B. Bondarenko, P. G. Gabdullin, N. M. Gnuchev, S. N. Davydov, V. V. Korablev, A. E. Kravchik, and V. V. Sokolov pp. 1360-1363 Full Text: PDF (48 kB) Nanoisland Nucleation in Thermal Spike Regions on the Material Surface Irradiated by Swift Heavy Ions M. V. Sorokin and A. E. Volkov pp. 1364-1367 Full Text: PDF (77 kB) EXPERIMENTAL INSTRUMENTS AND TECHNIQUES The Conduction Current in a Metal–Insulator–Metal Structure V. D. Kulikov pp. 1368-1374 Full Text: PDF (96 kB) A Noncontact Method to Study the Charge State of the Semiconductor–Insulator Interface V. V. Kryachko[dagger], M. N. Levin, A. V. Tatarintsev, and E. N. Bormontov pp. 1375-1380 Full Text: PDF (171 kB) X-ray Phase-Contrast Study of Dissolution of NaCl Crystals A. P. Petrakov and A. A. Kryazhev pp. 1381-1383 Full Text: PDF (43 kB) BRIEF COMMUNICATIONS Visualization of Inhomogeneities in a Plastic Flow by the Fields of Decorrelation and Scintillation Rates of Video Speckles S. N. Polyakov, S. A. Bikbaev, and L. B. Zuev pp. 1384-1386 Full Text: PDF (79 kB) Surface Electromagnetic Waves at a Superfluid Liquid—Normal Metal Interface A. I. Lomtev pp. 1387-1389 Full Text: PDF (48 kB)Archived web conten

    Coupling of pion condensate, chiral condensate, and Polyakov loop in an extended Nambu-Jona-Lasinio model

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    The Nambu-Jona-Lasinio model with a Polyakov loop is extended to the finite isospin chemical potential case, which is characterized by the simultaneous coupling of the pion condensate, chiral condensate, and Polyakov loop. The pion condensate, chiral condensate, and Polyakov loop as functions of temperature and isospin chemical potential are investigated by minimizing the thermodynamic potential of the system. The resulting (T,mu(I)) phase diagram is studied with emphasis on the critical point and Polyakov loop dynamics. The tricritical point for the pion superfluidity phase transition is confirmed, and the phase transition for isospin symmetry restoration in the high isospin chemical potential region perfectly coincides with the crossover phase transition for the Polyakov loop. These results agree with the lattice QCD data.Physics, NuclearSCI(E)0ARTICLE6null7

    Phase diagrams in the hadron-Polyakov-Nambu-Jona-Lasinio model

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    The two-equation of state model is used to describe the hadron-quark phase transition in dense-hot matter formed in heavy-ion collisions. The nonlinear Walecka model is used to describe the hadronic phase. For the quark phase, the Nambu-Jona-Lasinio (NJL) model coupled to Polyakov-loop fields is used to include both the chiral and (de) confinement dynamics. The phase diagrams are derived from the Gibbs conditions and compared with the results obtained in the hadron-NJL model without confinement. As in the hadron-NJL case a first order transition is observed, but with a critical end point at much higher temperatures, a consequence of the confinement mechanism that reduces the degrees of freedom of the quark matter in proximity to the phase transition. Particular attention is devoted to the phase transition in isospin asymmetric matter. Interesting isospin effects are found at high baryon density and reduced temperatures, which are in fact also common to other quark models, like the MIT bag model and the NJL model. Some possible observational signals are suggested to probe in heavy-ion collision experiments at intermediate energies.Astronomy & AstrophysicsPhysics, Particles & FieldsSCI(E)10ARTICLE3null8

    Doklady Physics V. 50, I. 09

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    leave(s) : ill; 28 cm.Doklady Physics -- September 2005 Volume 50, Issue 9, pp. 431-482 PHYSICS Effect of Magnetic Field on the Detonation Initiation by Spark Discharge in Hydrogen���Air Mixture V. V. Golub, V. S. Aksenov, D. I. Baklanov, V. V. Volodin, S. V. Golovastov, S. A. Gubin, V. P. Efremov, A. S. Savel'ev, V. E. Fortov, and Yu. L. Sharov pp. 431-433 Full Text: PDF (43 kB) Behavior of the Heat Capacity CV at the Liquid���Vapor Critical Point and in the Two-Phase Region of a Thermodynamic System A. B. Kaplun and A. B. Meshalkin pp. 434-437 Full Text: PDF (53 kB) On the Possible Change of the Surface-Energy Sign in Ionic Dielectrics under High Pressures S. V. Karpenko, A. P. Savintsev, and A. I. Temrokov pp. 438-440 Full Text: PDF (38 kB) TECHNICAL PHYSICS Self-Consistent Interaction of Photoelectron Pulses with Irregular Waveguides M. N. Golikov, V. I. Koroza, and A. S. Polyakov pp. 441-443 Full Text: PDF (49 kB) MECHANICS Qualitative Analysis of the Evolution of Deviations from the Spherical Shape During the Collapse of a Cavity in a Liquid M. A. Ilgamov pp. 444-447 Full Text: PDF (53 kB) The Principle of Equal Powers for Multilevel Fracture in Continua Yu. V. Petrov, A. A. Gruzdkov, and N. F. Morozov pp. 448-451 Full Text: PDF (51 kB) Formation of Vortices on Soaring Interfaces in Stratified Flows Behind a Cylinder Yu. D. Chashechkin and V. V. Mitkin pp. 452-456 Full Text: PDF (209 kB) Mach Number of Drag Convergence for the Riabouchinsky Nose Part of a Body of Revolution in a Near-Sonic Gas Flow V. A. Barinov, E. N. Kuznetsov, S. I. Skomorokhov, and I. L. Chernyshev pp. 457-458 Full Text: PDF (59 kB) Reflection of Capillary-Gravity Waves by Surface Convection Domains A. V. Kistovich and Yu. D. Chashechkin pp. 459-462 Full Text: PDF (60 kB) Longitudinal and Torsional Waves and Vibrations in Stressed Thin-Walled Tubes A. A. Malashin pp. 463-466 Full Text: PDF (52 kB) Instability and Periodic Motion of a Physical Pendulum with a Vibrating Suspension Point (Theoretical and Experimental Approach) A. P. Seyranian, H. Yabuno, and K. Tsumoto pp. 467-472 Full Text: PDF (149 kB) One Feature of Conical Gas Flows with Shock Waves and Boundary-Layer Separation M. A. Zubin, N. A. Ostapenko, and A. A. Chulkov pp. 473-477 Full Text: PDF (297 kB) Contact Problems of Filtration Theory in Curvilinear Domains V. N. Monakhov pp. 478-482 Full Text: PDF (73 kB)The content contained herein is maintained and curated by the Preservation Department.This record is revised and maintained by the content administrators from the Cataloging & Metadata Department
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