Spinorial density matrix equation and gauge covariance
Abstract
In this work we apply the Lie group representation method introduced in the real time formalism for finitetemperature quantumfield theory, thermofield dynamics, to derive a spinorial density matrix equation. Symmetry properties of such equation are analysed, and as a basic result it is shown that one solution is the generalised density matrix operator proposed by Heinz, to deal with gauge covariant kinetic equations. In the same context, preliminary aspects of a Lagrangian formalism to derive kinetic equations, as well as quantum density matrix equations in curved spacetime, are discussed.
 Publication:

arXiv eprints
 Pub Date:
 December 1998
 DOI:
 10.48550/arXiv.hepth/9812222
 arXiv:
 arXiv:hepth/9812222
 Bibcode:
 1998hep.th...12222K
 Keywords:

 High Energy Physics  Theory
 EPrint:
 LaTex, 17 pages