Comment on ``Relativistic kinetic equations for electromagnetic, scalar and pseudoscalar interactions''

Details Comment on ``Relativistic kinetic equations for electromagnetic, scalar and pseudoscalar interactions'' Comment on ``Relativistic kinetic equations for electromagnetic, scalar and pseudoscalar interactions''

1996-05-08

arxiv.org/abs/hep-ph/9605249v1

Phys.Rev.D54:4175-4176,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages LaTeX

Scientific paper

10.1103/PhysRevD.54.4175

It is found that the extra quantum constraints to the spinor components of the equal-time Wigner function given in a recent paper by Zhuang and Heinz should vanish identically. We point out here the origin of the error and give an interpretation of the result. However, the principal idea of obtaining a complete equal-time transport theory by energy averaging the covariant theory remains valid. The classical transport equation for the spin density is also found to be incorrect. We give here the correct form of that equation and discuss briefly its structure.

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