Title

Position operators for systems exhibiting the special relativistic relation between momentum and velocity

Document Type

Article

Publication Date

9-4-1978

Abstract

We have previously shown [1] that if the position operator is defined as in ref. [2], the movement of the mean position of a free particle obeys the classical equation ν = P P0 where P0 is the total energy, including the rest mass. Conversely, it will be demonstrated here that the validity of this equation implies that, for spinless particles, the position operator is that of ref. [2]. For spin 1 2 particles, however, another choice is also possible (eq. (7)). The corresponding value of the orbital angular momentum in the latter case is unity, whereas for the state of ref. [2] it is zero. © 1978.

Publication Source (Journal or Book title)

Physics Letters A

First Page

319

Last Page

321

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