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Yurov A.V.,Immanuel Kant State University of Russia | Yurov V.A.,University of Missouri | Chervon S.V.,Ulyanovsk State Pedagogical University | Sami M.,Jamia Millia Islamia University
Theoretical and Mathematical Physics

We study the class of integrable self-action potentials satisfying the conditions that (1) they spontaneously break the symmetry, (2) they describe the inflation phase with a graceful exit (i.e., with an exit that does not require fine tuning parameters), and (3) they feature several consecutive inflation phases. The first condition ensures that the inflation mechanism is qualitatively consistent with elementary particle physics, the second is a necessary ingredient of any inflation theory, and the third is necessary for a theory to be consistent with contemporary observational data, which support the accelerated expansion of the Universe. © 2011 MAIK/Nauka. Source

Zakharenkova I.E.,University of Warmia and Mazury | Krankowski A.,University of Warmia and Mazury | Krypiak-Gregorczyk A.,University of Warmia and Mazury | Wielgosz P.,University of Warmia and Mazury | Lagovsky A.F.,Immanuel Kant State University of Russia
Earth, Planets and Space

The electron density profiles retrieved from the COSMIC radio occultation measurements were examined in order to estimate the possibility of its use as additional data source to study changes in electron density distribution occurred during ionospheric storms. The ionosphere behaviour during moderate geomagnetic storm which occurred on October 11, 2008 was analysed. The short-duration positive effect was revealed distinctly in GPS TEC and ionosonde measurements. For the European mid-latitude region it reached the factor of 2 or more relative to the undisturbed conditions. COSMIC data were analyzed and their validity was tested by comparison with ground-based measurements. It was shown the good agreement between independent measurements both in quiet and disturbed conditions. Analysis of COSMIC-derived electron density profiles revealed changes of the bottom-side and topside parts of the ionosphere. Copyright © The Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS). Source

Karpov I.V.,Russian Academy of Sciences | Shagimuratov I.I.,Russian Academy of Sciences | Yakimova G.A.,Russian Academy of Sciences | Suslova O.P.,Immanuel Kant State University of Russia
Russian Journal of Physical Chemistry B

The characteristics of total electron content (TEC) variations obtained using the data of middlelatitude stations for receiving GPS satellite signals were studied. An analysis showed that perturbations of diurnal TEC variations during a geomagnetic storm were determined by strengthening of harmonics with periods of 4-5 and 6-8 h. Perturbations in diurnal TEC variations were retained for several days after a geomagnetic storm. An analysis of the frequency and amplitude characteristics of perturbed variations showed that differences between variations at different latitudes could be explained by the propagation of Poincaré planetary waves in an atmospheric wave channel. The atmospheric channel was formed because of increased heating of pole regions during geomagnetic storms. A comparative analysis of observations made at different stations was used to estimate the width of the atmospheric channel and Poincaré wave frequencies and wave vector components. © Pleiades Publishing, Ltd., 2011. Source

Bessarab P.F.,Saint Petersburg State University | Radievsky A.V.,Immanuel Kant State University of Russia
Journal of Physics: Conference Series

In the framework of the 2D and 3D time-dependent Ginzburg-Landau model we study superconductors with multicomponent order parameter (d-pairing). We argue that topological defects inside the sample do affect its thermodynamic properties such as hysteresis loop, susceptibility, etc. Along with earlier known topological defects such as Abrikosov vortices, domain walls (DWs) which separate different magnetic phases and even vortices inside the DW, we found an interesting combination of DWs and vortices. Namely we show that equivalent magnetic phases may be linked together with a vortex going through the other magnetic phase. This configuration may correspond to a stable state even in a zero external magnetic field. We also mention that this configuration is topologically similar to the 'wormholes' in the quantum gravity. © 2010 IOP Publishing Ltd. Source

Golubkov G.V.,RAS Semenov Institute of Chemical Physics | Golubkov M.G.,RAS Semenov Institute of Chemical Physics | Karpov I.V.,Immanuel Kant State University of Russia | Devdariani A.Z.,Saint Petersburg State University
Russian Journal of Physical Chemistry B

The emission ability of Rydberg atoms and molecules in the orbitally degenerate states is considered. The mechanisms of their formation in the F, E, and D upper atmosphere layers are analyzed. The characteristic lifetimes of these states in the microwave range are estimated. It is shown that radiation in this range can be accompanied by a cascade of transitions. The possibility of studying the influence of intense atmospheric microwave radiation on living organisms is discussed. © Pleiades Publishing, Ltd., 2011. Source

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