SVIBOR - Project code: 1-03-305

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
E-mail: ured@znanost.hr

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Project code: 1-03-305

RELATIVISTIC ELECTRODYNAMICS

Main researcher: IVEZIĆ, TOMISLAV (71760)

Assistants

Type of research: basic
Duration from: 10/01/91. to 12/31/95.

Papers on project (total): 7
Papers on project quoted in Current Contents: 7

Institution name: Institut "Ruđer Bošković", Zagreb (98)
Department/Institute: Department of physics, Division of experimental physics
Address: Bijenička cesta 54
City: 10000 - Zagreb, Croatia

Communication: Phone: 385 (1) 4561-111/1323; Fax: 385 (1) 434-467; E-mail: ivezic@olimp.irb.hr

Summary: This Project refers to the foundation and the further theoretical development of the recently discovered effect (Ivezić, Phys. Lett. A144: 427-431, 1990.) of the existence of the second-order electric field outside stationary conductors with steady currents. The traditional approach predicts that there are no such electric fields outside stationary conductors but only outside the same conductors in motion. The detailed analysis of the common approach reveals that it is not properly founded either theoretically or experimentally (there is no experiment which confirms the usual results). Therefore, another model is proposed, which takes into account the relativistic contraction of the moving electron subsystem (the conduction current) in the stationary conductor. Such contraction, together with the appropriate redefinition of the procedure for the calculation of the macroscopic charge on the element of length of the current-carrying conductor, leads to the existence of the second-order electric fields outside stationary conductors. It is shown that the new approach is in a complete agreement with special relativity and Maxwell's electrodynamics as it is the usual approach. However, the new model is in agreement with the fundamental laws - the conservation and the invariance of charge, while it is not always the case for the traditional approach. Recently (1995) I have obtained very interesting and important result showing in an exact way that the usual definitions of length, the synchronous definition and the covariant one, are incorrect for all physical systems consisting of relatively moving subsystems. The noninvariance of charge for a part of a current-carrying conductor in the usual synhcronous definitions is the direct consequence of the incorrectness of the usual definition of length for such systems. Therefore I have proposed the alternative definitions of length and charge that are valid for all physical systems including those consisting of relatively moving subsystems. The second-order electric fields are one of the consequences of the new alternative definitions of length and charge. The experimental results, which still are not quite reliable, also suggest the validity of the new approach. The consequences of the existence of such second-order electric fields in plasma and superconductors will be examined in detail.

Keywords: Second-order electric fields, steady currents, conservation of charge, invariance of charge, synchronous, covariant and alternative length and charge, plasma

Research goals: 1. The achievement of the better understanding of the theoretical and experimental foundation of the common and the new approach in the treatment of fundamental laws of the conservation and the invariance of charge, then in different definitions of length and charges in motion. 2. The obtained results in the new approach will be generalized to the non-inertial reference frames (treated in special relativity), and to the quantum electrodynamics. 3. The results of the new approach, which predicts the existence of the second-order electric fields outside steady currents, will be applied to plasma, particularly to tokamaks and astrophysics. One expects the important contributions to the better understanding of the basis of the classical and quantum electrodynamics, particularly in the understanding of the fundamental definitions of length and volume and conservation and the invariance of charge. Further, one expects numerous and important applications of the predicted second-order electric fields in plasma, particularly in the controlled thermonuclear fusion, and in an electromagnetic collapse in dense plasma at high currents. Furthermore, the interesting and numerous applications of such fields can be expected in superconductors, and in the examination of the foundation of the quantum mechanics, e.g., in Aharonov-Bohm and Aharonov-Casher effects.

Other information about the project.


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