Abstract
Zitterbewegung of massive and massless scalar bosons and a massive Proca (spin-1) boson is analyzed. The equations describing the evolution of the velocity and position of the scalar boson in the generalized Feshbach–Villars representation and the corresponding equations for the massive Proca particle in the Sakata–Taketani representation are equivalent to each other and to the well-known equations for the Dirac particle. However, Zitterbewegung does not appear in the Foldy–Wouthuysen representation. Since the position and velocity operators in the Foldy–Wouthuysen representation and their transforms to other representations are the quantum-mechanical counterparts of the corresponding classical variables, Zitterbewegung is not observable.
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ACKNOWLEDGMENTS
The author acknowledges hospitality and support by the Institute of Modern Physics of the Chinese Academy of Sciences.
Funding
This work was supported in part by the Belarusian Republican Foundation for Fundamental Research (Grant no. Φ18D-002), by the National Natural Science Foundation of China (Grants nos. 11575254 and 11805242), and by the National Key Research and Development Program of China (no. 2016YFE0130800).
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Silenko, A.J. Zitterbewegung of Bosons. Phys. Part. Nuclei Lett. 17, 116–119 (2020). https://doi.org/10.1134/S1547477120020193
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DOI: https://doi.org/10.1134/S1547477120020193