Notes on relativistic equations of spin motion

Joseph Shaffer

F. C. Powell

It is well known that the motion of a dynamical system can be pictured in two distinct ways, which Dirac names the Heisenberg picture and the Schrödinger picture. The equations of motion take different forms in the two pictures, but of course have identical physical consequences, since the motion of the system does not depend in any way on which picture we choose. It should therefore be possible to express the equations in an invariant form (independent, that is, of the picture used). It will be shown in this note that not only can this be done (equation (3)), but it can be done in such a way that it is not even necessary to introduce a picture at all (equation (3′)).

David Leo Weaver

shoichiro otsuka

In this paper, I show the solution I gave in the previous paper is compatible with ordinary relativistic and non-relativistic Quantum Mechanics.

A. G. Nikitin

Relativistic motion equations are obtained for a quantummechmical system which may be in the states with different spin, possible spin values lying in the arbitrary preset interval. The equations obtained are of the Schroedinger form, invariant with respect to the Poincare full group transformations and do not contain superfluous (nonphysical) components. (auth)

Ralph F. Guertin. Physics Department