Relativistic transport equations with generalized mass shell constraints

Details Relativistic transport equations with generalized mass shell constraints Relativistic transport equations with generalized mass shell constraints

1999-09-29

arxiv.org/abs/nucl-th/9909073v2

Physics

Nuclear Physics

Nuclear Theory

11 pages, submitted to Proceedings KB99 Workshop, September 20-24 1999, Rostock, Germany

Scientific paper

We reexamine the derivation of relativistic transport equations for fermions when conserving the most general spinor structure of the interaction and Green function. Such an extension of the formalism is needed when dealing with {\it e.g.} spin-polarized nuclear matter or non-parity conserving interactions. It is shown that some earlier derivations can lead to an incomplete description of the evolution of the system even in the case of parity-conserving, spin-saturated systems. The concepts of kinetic equation and mass shell condition have to be extended, in particular both of them acquire a non trivial spinor structure which describe a rich polarization dynamics.

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