volume | PIER Journals

Abstract

We consider three different definitions of magnetic dipole moment for electrically neutral compact bunches of charged particles and show that, in general, they are not equivalent to each other with respect to their relativistic transformation. In particular, we prove that the "configurational" definition of magnetic dipole moment m_c = 1/2∫_v(r × j)dV (in the common designations) and its definition through generated electromagnetic field ("source" definition m_s) or experienced force ("force" definition m_f) lead to different relativistic transformations of m_c and m_s (m_f). The results obtained shed light on the available disagreements with respect to relativistic transformation of a magnetic dipole moment, and they can be used in covariant formulation of classical electrodynamics in material media.

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Dr. Alexander L. Kholmetskii

Dr. Oleg V. Missevitch

Dr. Tolga Yarman