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Перегляд Вопросы атомной науки и техники, 2007, № 3 за темою "QED processes in strong fields"

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Перегляд Вопросы атомной науки и техники, 2007, № 3 за темою "QED processes in strong fields"

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  • About neutron acceleration in uniform electromagnetic fields 
    Stepanovsky, Yu.P.; Zanimonskiy, Y.Y. (Вопросы атомной науки и техники, 2007)
    It has been shown some time ago that a neutron undergoes some acceleration in uniform electromagnetic fields. We found an exact solution of Dirac wave equation for a neutron imbedded in a uniform electromagnetic field and ...
  • About pressure in model of the expanding Universe 
    Sannikov-Proskuryakov, S.S. (Вопросы атомной науки и техники, 2007)
    Closed model of Universe on the earlier stage of its evolution is defined more precisely. It is considered here that after the Big Bang and De Sitter’s (exponential) expanding phase in which the pressure is p=-c²ρc (see ...
  • Circular polarization of the high energy electron bremsstrahlung with account of the second Born approximation 
    Shul’ga, N.F.; Syshchenko, V.V. (Вопросы атомной науки и техники, 2007)
    The estimation of contribution of the second Born approximation into circular polarization of bremsstrahlung from linearly polarized electrons is obtained. Account of this contribution could be important for correct ...
  • Dice and pulsars 
    Kontorovich, V.M. (Вопросы атомной науки и техники, 2007)
    The pulse sequence is interpreted as a realization of a random electron discharge process in a vacuum gap over the polar cap (PC) —the open magnetic force line region on the neutron star surface. This point of view is ...
  • Eikonal approximation in the transition radiation theory 
    Shul’ga, N.F.; Syshchenko, V.V. (Вопросы атомной науки и техники, 2007)
    Simple variant of eikonal approximation in transition radiation theory is proposed. Spectral-angular density of radiation on fiber-like targets and nanotubes is calculated using Born and eikonal approximations. The conditions ...
  • Femtosecond scanning, chopping (slicing) and measurement of length of electron bunches by laser pulses: principles of femtosecond oscilloscopes 
    Gazazian, E.D.; Guidi, V.; Ispirian, K.A.; Ispirian, M.K.; Kalantaryan, D.K. (Вопросы атомной науки и техники, 2007)
    The equations of motion of electrons in a plane monochromatic wave with linear, circular and elliptical polarizations are solved taking into account the initial conditions. The cases when the interaction of the electrons ...
  • New perturbation theory in QED 
    Filippov, G.M. (Вопросы атомной науки и техники, 2007)
    The new perturbation theory in QED without the ultraviolet catastrophe is constructed.
  • Radiation reaction and renormalization for a photon-like charged particle 
    Yaremko, Yu. (Вопросы атомной науки и техники, 2007)
    A renormalization scheme which relies on energy-momentum and angular momentum balance equations is applied to the derivation of effective equation of motion for a massless point-like charge. Unlike the massive case, the ...
  • Radiative corrections in high energy Compton scattering 
    Konchatnij, M.I.; Merenkov, N.P. (Вопросы атомной науки и техники, 2007)
    Radiative corrections (RC) to the differential and total Compton scattering cross sections are calculated. We consider the scattering of photon with a few GeV energy by the atomic electron. The reason is the unique possibility ...
  • Resonant photoproduction of e⁺e⁻-pair with photon emission in strong magnetic field 
    Fomin, P.I.; Kholodov, R.I. (Вопросы атомной науки и техники, 2007)
    The quantum-electrodynamic process of electron-positron pair production by a photon is considered in a strong external magnetic field. The process is accompanied by emission of the final photon. Kinematics and resonance ...
  • Resonant two-photon emission of an electron in the field of an electromagnetic wave 
    Voroshilo, O.I.; Roshchupkin, S.P. (Вопросы атомной науки и техники, 2007)
    We present, for general relativistic case, a theoretical investigation of the resonant two-photon emission of an electron in the circularly-polarized electromagnetic wave. Resonances are related to a virtual intermediate ...
  • Some problems in the theory of early universe evolution 
    Sannikov-Proskuryakov, S.S. (Вопросы атомной науки и техники, 2007)
    We continue consideration of physical characteristics of early Universe. Here our attention is concentrated on the three topics: thermodynamics, relic helium, energy of physical vacuum.

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