Resumo

RODRIGUEZ-DOMINGUEZ, A.R. Ecuaciones de fuerza de Lorentz como ecuaciones de Heisenberg para un sistema cuántico en el espacio euclidiano 4D. Rev. mex. fis. [online]. 2007, vol.53, n.4, pp.270-280. ISSN 0035-001X.

In an earlier work, the dynamic equations for a relativistic charged particle under the action of electromagnetic fields were formulated by R. Yamaleev (1) in terms of external, as well as internal momenta. Evolution equations for external momenta, the Lorentz-force equations, were derived from the evolution equations for internal momenta. The mapping between the observables of external and internal momenta are related by Viete formulae for a quadratic polynomial, the characteristic polynomial of the relativistic dynamics. In this paper we show that the system of dynamic equations, constructed in Ref. 1, can be cast into the Heisenberg scheme for a four-dimensional quantum system. Within this scheme the equations in terms of internal momenta play the role of evolution equations for a state vector, whereas the external momenta obey the Heisenberg equation for an operator evolution. The solutions of the Lorentz-force equation for the motion inside constant electromagnetic fields are presented via pentagonometric functions.

Palavras-chave : Lorentz; Hisenberg and Evolution Equations; internal and external momenta; cuaternionic and espinorial formulations; pentagonometric functions.

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