Browsing by Author "Missevitch, Oleg V."

Now showing 1 - 13 of 13

Citation Count: 5
4/3 problem, Poynting theorem, and electromagnetic energy-momentum tensor
(Canadian Science Publishing, 2015) Yarman, Nuh Tolga; Missevitch, Oleg V.; Yarman, Tolga; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We show that the familiar 4/3 problem originates from the incorrect determination of the momentum of the electromagnetic field generated by an isolated charged particle, which results from an incorrect application of the Poynting theorem to the field. To demonstrate this, we consider a macroscopic problem: splitting a charged oil droplet into two identical smaller droplets in the rest frame K of the original droplet, and in another inertial frame K' moving with respect to K with some constant velocity, and arrive at a physically senseless solution in the framework of the standard approach. To solve this problem in a correct way, we suggest a modified Poynting theorem for an isolated charge and recalculate the momentum of the electromagnetic field of this charge, which yields the usual relativistic relationship between the field energy and momentum. Our approach is not at odds with the idea about "Poincare stresses"; however, in contrast to the standard method, it provides a usual relationship between the "Poincare stress-energy" and the associated momentum stress component. Finally, the continuity equation in four-dimensional form for the case of isolated moving charge is also proposed, which completely resolves the 4/3 problem.
Citation Count: 0
Charged particle in a constant electric field: force on a parallel plate charged capacitor
(Iop Publishing Ltd, 2018) Yarman, Nuh Tolga; Missevitch, Oleg V.; Yarman, Tolga; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We analyze the problem about the motion of a classical charged particle with negligible radiation losses inside a parallel plate charged capacitor and determine mutual forces acting between the charge and insulating capacitor plates in the rest frame of the capacitor and in the rest frame of the charge, correspondingly. In the latter case, the force on the capacitor's plates additionally contains a component associated with the flow of energy of mechanical stresses in the plates. We show that the misbalance of forces of action and reaction in this system is compensated by the time variation of momentum of the inter-actional electromagnetic field created by the capacitor and charge, which ensures the conservation of total momentum. The results obtained are helpful for better understanding the interaction of point-like charge with a charged body of finite size.
Citation Count: 10
Comment on the note 'Faraday's law via the magnetic vector potential' by Dragan V Redzic
(Iop Publishing Ltd, 2008) Yarman, Nuh Tolga; Missevitch, Oleg V.; Yarman, Tolga; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We find an error in the note [1] and suggest a correct expression for Faraday's law via the vector potential.
Citation Count: 12
Electromagnetic force on a moving dipole
(Iop Publishing Ltd, 2011) Yarman, Nuh Tolga; Missevitch, Oleg V.; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We analyse the force acting on a moving dipole due to an external electromagnetic field and show that the expression derived in Vekstein (1997 Eur. J. Phys. 18 113) is erroneous and suggest the correct equation for the description of this force. We also discuss the physical meaning of the relativistic transformation of current for a closed circuit and carry out the analysis of a number of particular physical problems, which are important from the educational viewpoint.
Citation Count: 10
Force law in material media, hidden momentum and quantum phases
(Academic Press inc Elsevier Science, 2016) Yarman, Nuh Tolga; Missevitch, Oleg V.; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We address to the force law in classical electrodynamics of material media, paying attention on the force term due to time variation of hidden momentum of magnetic dipoles. We highlight that the emergence of this force component is required by the general theorem, deriving zero total momentum for any static configuration of charges/currents. At the same time, we disclose the impossibility to add this force term covariantly to the Lorentz force law in material media. We further show that the adoption of the Einstein-Laub force law does not resolve the issue, because for a small electric/magnetic dipole, the density of Einstein-Laub force integrates exactly to the same equation, like the Lorentz force with the inclusion of hidden momentum contribution. Thus, none of the available expressions for the force on a moving dipole is compatible with the relativistic transformation of force, and we support this statement with a number of particular examples. In this respect, we suggest applying the Lagrangian approach to the derivation of the force law in a magnetized/polarized medium. In the framework of this approach we obtain the novel expression for the force on a small electric/magnetic dipole, with the novel expression for its generalized momentum. The latter expression implies two novel quantum effects with non-topological phases, when an electric dipole is moving in an electric field, and when a magnetic dipole is moving in a magnetic field. These phases, in general, are not related to dynamical effects, because they are not equal to zero, when the classical force on a dipole is vanishing. The implications of the obtained results are discussed. (C) 2016 Elsevier Inc. All rights reserved.
Citation Count: 45
A Mossbauer experiment in a rotating system on the second-order Doppler shift: confirmation of the corrected result by Kundig
(Iop Publishing Ltd, 2009) Yarman, Nuh Tolga; Yarman, Tolga; Missevitch, Oleg V.; Rogozev, Boris I.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We present the results of a Mossbauer experiment in a rotating system, whose performance was stimulated by our recent findings (2008 Phys. Scr. 77 035302) and which consisted of the fact that a correct processing of Kundig's experimental data on the subject gives an appreciable deviation of a relative energy shift Delta E/E between emission and absorption resonant lines from the standard prediction based on the relativistic dilation of time (that is, Delta E/E = -v(2)/2c(2) to the accuracy c(-2), where v is the tangential velocity of the absorber of resonant radiation, and c is the velocity of light in vacuum). That is, the Kundig result we have corrected becomes Delta E/E = -k(v(2)/c(2)), with k = 0.596 +/- 0.006 (instead of the result k = 0.5003 +/- 0.006, originally reported by Kundig). In our own experiment, we carried out measurements for two absorbers with a substantially different isomer shift, which allowed us to make a correction of the Mossbauer data regarding vibrations in the rotor system at various rotational frequencies. As a result, we obtained the overall estimation k = 0.68 +/- 0.03.
Citation Count: 28
Mossbauer experiments in a rotating system on the time dilation effect
(Academic Journals, 2011) Yarman, Nuh Tolga; Yarman, Tolga; Missevitch, Oleg V.; Rogozev, Boris I.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
In this contribution, we analyze both the old Mossbauer experiments in a rotating system and our new experiment on this subject, which unambiguously indicate the presence of an additional component in the relative energy shift Delta E/E between emission and absorption lines, as compared with the classic relativistic expression written to the accuracy c(-2) (that is Delta E/E=-u(2)/2c(2), where u is the tangential velocity of absorber, and c the light velocity in vacuum). The additional dilation of time for the rotating absorber constitutes more than 20% from the relativistic value, and it many times exceeds the measuring uncertainty. We discuss a possible origin of this effect and the ways of its further experimental verification.
Citation Count: 2
Note on Faraday's law and Maxwell's equations
(Iop Publishing Ltd, 2008) Yarman, Nuh Tolga; Missevitch, Oleg V.; Yarman, Tolga; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We generalize the approach developed by us for the evaluation of the total time derivative of circular integral (Kholmetskii A L et al 2008 Eur. J. Phys. 29 L1-4) and derive an explicit expression for the total time derivative of the area integral for a differentiable vector field. On the basis of this expression, we prove for the first time that Faraday's law can be directly obtained from the Maxwell equations del x E = -delta B/delta t, del center dot B = 0 and the Lorentz force law.
Citation Count: 2
Pure bound field corrections to the atomic energy levels and the proton size puzzle
(Canadian Science Publishing, 2014) Yarman, Nuh Tolga; Missevitch, Oleg V.; Yarman, Tolga; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
Reinforcement of the puzzle about the proton charge radius, r(E), stimulated by the recent experiment with muonic hydrogen (Antognini et al. Science, 339, 417 (2013)) induced new discussions on the subject, and now some physicists are ready to adopt the exotic properties of the muon, lying beyond the Standard Model, to explain the difference between the results of muonic hydrogen experiments (r(E) = 0.840 87(39) fm) and the CODATA-2010 value r(E) = 0.8775(51) fm based on electron-proton scattering and hydrogen spectroscopy. In the present contribution we suggest a way to achieve progress in the entire problem via paying attention on some logical inconsistency of fundamental equations of atomic physics, constructed by analogy with corresponding classical equations without, however, taking into account the purely bound nature of electromagnetic fields generated by the electrically bound particles in stationary energy states. We suggest eliminating this inconsistency via introducing some appropriate correcting factors into these equations, which explicitly involve the requirement of total momentum conservation in the system "bound particles and their fields" in the absence of electromagnetic radiation. We further show that this approach allows us not only to eliminate long-standing discrepancies between theory and experiment in the precise physics of simple atoms, but also yields the same estimation ( though with different uncertainties) for the proton size in the classic 2S-2P Lamb shift in hydrogen, 1S Lamb shift in hydrogen, and 2S-2P Lamb shift in muonic hydrogen, with the mean value rE = 0.841 fm. Finally, we suggest the crucial experiment for verification of the validity of pure bound field corrections: the measurement of decay rate of bound moun in various meso-atoms, especially at large Z, where the standard calculations and our predictions essentially deviate from each other, and some of the available experimental results (Yovanovitch. Phys. Rev. 117, 1580 ( 1960)) strongly support our approach.
Citation Count: 0
Reply to 'Comment on "Note on Faraday's law and Maxwell's equations"'
(Iop Publishing Ltd, 2008) Yarman, Nuh Tolga; Missevitch, Oleg V.; Yarman, Tolga; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We answer to the criticism of Redzic about our derivation of Faraday's law (Kholmetskii et al 2008 Eur. J. Phys. 29 N5-10).
Citation Count: 8
Reply to comments on 'Electromagnetic force on a moving dipole'
(Iop Publishing Ltd, 2012) Yarman, Nuh Tolga; Missevitch, Oleg V.; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We show that the expression for the force on a moving point-like dipole we derived in Kholmetskii et al (2011 Eur. J. Phys. 32 873) is correct and indicate an error in the criticism by Vekstein. We also show that with the inclusion of a 'hidden' momentum contribution, our expression has the general character and can be reduced to the expressions by Hnizdo or by Vekstein in the approximations they adopted. Concurrently, we recognize that the mathematical side of the paper by Vekstein (1997 Eur. J. Phys. 18 113) is correct.
Citation Count: 0
Role of electromagnetic energy and momentum in the Aharonov-Bohm effect
(Royal Soc, 2024) Yarman, Nuh Tolga; Missevitch, Oleg V.; Yarman, Tolga; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We analyse the physical meaning of the Aharonov-Bohm (AB) phase based on its representation through electromagnetic (EM) potentials as a sum of four components, which, in addition to the known electric and magnetic phase components, contains two more terms recently disclosed by our team in the analysis of quantum phase effects for dipoles and charges, and which we named the complementary electric AB phase and the complementary magnetic AB phase. Using the complete expression for the AB phase, we reveal that the phase component, explicitly depending on time, is determined by the interactional electric energy, while the phase component, explicitly depending on the velocity of charge, is determined by the interactional EM momentum for an isolated system 'source of EM field and charge'. These findings shed new light on the origin of the AB phase and, in particular, allow us to generalize the de Broglie relationship and the Heisenberg uncertainty relations for a charged particle in an EM field.
Citation Count: 3
Thomas precession and the Bacry paradox
(Canadian Science Publishing, 2014) Yarman, Nuh Tolga; Missevitch, Oleg V.; Yarman, Tolga; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We show that in the derivation of the frequency of Thomas precession, the fact of implementation of rotation-free Lorentz transformations between a laboratory frame, K-L, and Lorentz frames K(t) co-moving with a particle with spin at any time moments, t, has principal importance. Choosing for the observation of the particle's motion any other inertial frame, K, related with K-L by the rotation-free transformation, we have to realize that the transformations between K and K(t) at any t are no longer rotation-free. This way we provide a resolution of the known paradox by Bacry (H. Bacry. Nuovo Cimento, 26, 1164 (1962)) and suggest a reinterpretation of the Thomas precession, which is further discussed.