Entity

Time filter

Source Type


Skobelev V.V.,Moscow State Industrial University
Journal of Experimental and Theoretical Physics | Year: 2011

The Fermi energy, pressure, internal energy, entropy, and heat capacity of completely degenerate relativistic electron gas are calculated by numerical methods. It is shown that the maximum admissible magnetic field on the order of 10 9 G in white dwarfs increases the pressure by a factor of 1.06 in the central region, where the electron concentration is ∼10 33 cm -3, while the equilibrium radius increases by approximately a factor of 1.03, which obviously cannot be observed experimentally. A magnetic field of ∼10 8 G or lower has no effect on the pressure and other thermodynamic functions. It is also shown that the contribution of degenerate electron gas to the total pressure in neutron stars is negligible compared to that of neutron gas even in magnetic fields with a maximum induction ∼10 17 G possible in neutron stars. The neutron beta-decay forbiddeness conditions in a superstrong magnetic field are formulated. It is assumed that small neutron stars have such magnetic fields and that pulsars with small periods are the most probable objects that can have superstrong magnetic fields. © Pleiades Publishing, Inc., 2011. Source


Skobelev V.V.,Moscow State Industrial University
Journal of Experimental and Theoretical Physics | Year: 2011

Temperature corrections to the basic thermodynamic functions calculated in our earlier publication [1] for a degenerate neutron gas in a magnetic field are determined taking into account the anomalous magnetic moment of a neutron. The heat capacity and entropy of the degenerate neutron gas, as well as the temperature correction to the magnetic susceptibility, are also calculated. Additional arguments supporting the effect of an increase in the pulse frequency of pulsars mentioned in the previous publication are formulated; the results of that publication are refined. © 2011 Pleiades Publishing, Ltd. Source


Skobelev V.V.,Moscow State Industrial University
Journal of Experimental and Theoretical Physics | Year: 2012

The magnetization and magnetic susceptibility of a degenerate electron gas in a strong magnetic field in which electrons are located on the ground Landau level and the electron gas has the properties of a nonlinear paramagnet have been calculated. The paradoxical properties of the electron gas under these conditions-a decrease in the magnetization with the field and an increase in the magnetization with the temperature-have been revealed. It has been shown that matter under the corresponding conditions of neutron stars is a paramagnet with a magnetic susceptibility of χ ∼ 0.001. © Pleiades Publishing, Inc., 2012. Source


Skobelev V.V.,Moscow State Industrial University
Russian Physics Journal | Year: 2013

In the context of the definition of the total entropy of the early Universe, on the assumption of its fermion and boson composition with an "accompanying" photon gas, the entropy, energy, and pressure of the gas have been calculated in an n-dimensional space in which the Universe could be during those "times." The problem appears extremely urgent if we suppose that the "choice" of the space dimensionality occurred based on an entropy maximum. © 2013 Springer Science+Business Media New York. Source


Skobelev V.V.,Moscow State Industrial University
Russian Physics Journal | Year: 2013

Preliminary analytical calculations show that if one assumes fermions (quarks or electrons) generated by superstrings in the early Universe to have existed as a degenerate, nonrelativistic, ideal quantum gas, then the entropy of such a system will have local maxima in spaces with number of dimensions n = 5, 9, 13. Thus there are reasons to assume that the Universe was formed in a space with specifically such a number of dimensions. With further evolution of the Universe, if we continue to adhere to the ground-laying principle of the second law of thermodynamics, in connection with ongoing changes in the temperature and composition, it appears that space with n = 3 began to correspond to an entropy maximum. Whatever the case may be, the latter assertion is only a hypothesis, whose proof at the given stage of knowledge is not possible. © 2013 Springer Science+Business Media New York. Source

Discover hidden collaborations