Abstract
The free Dirac equation describes a relativistic electron or positron which moves freely as if there were no external fields or other particles. Nevertheless this equation is important for the asymptotic description of interacting particles because in the limit of large times interacting particles tend to behave like free ones, provided their mutual separation increases.
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© 1992 Springer-Verlag Berlin Heidelberg
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Thaller, B. (1992). Free Particles. In: The Dirac Equation. Texts and Monographs in Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-02753-0_1
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DOI: https://doi.org/10.1007/978-3-662-02753-0_1
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-08134-7
Online ISBN: 978-3-662-02753-0
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