Zitterbewegung

[arivero]

This weekend I have been reading the textbook of Paul Strange, "Relativistic Quantum Mechanics". There, in chapter 7, in takes the most extensive description of Zitterbewegung I am aware of, at least in a textbook. Most of the discussion uses the Foldy-Wouthuysen representation, while it refers to Costella and McKellar 1995 for general conclusions on it. I have not read this yet, but preprints are available online as usual (hep-ph/9503416,
also hep-ph/9704210 and hep-ph/0102244)

For newcomers, let me to remark that the Z. effect can be used to justify the eigenvalues of the velocity operator in relativistic QM, and also it gives a partial justification of spin.

[laserblue]

How does it compare and contrast wit http://modelingnts.la.asu.edu/html/Impl_QM.html ?

[arivero]

Lets say that it is "orthodox". IE instead of alternative approaches to spinors, it uses the F-W transformation, which is standard in relativistic quantum mechanics, to separate the components of the spinor and then to locate the Zitterbewegung effect.

[arivero]

We got a nice tale about emerging compton length from gravity plus plank length, at the LQG forum zone.

http://www.physicsforums.com/showthread.php?s=&threadid=14007