QUANTUM KINETIC BOLTZMANN-EQUATION TAKING INTO ACCOUNT THE RESONANT EXCHANGE OF EXCITATIONS

A derivation of the quantum Boltzmann equation is given for identical particles with internal degrees of freedom. It is shown that the off-d iagonal (with respect to the internal degrees of freedom) term of the equation contains an energy pole term, which is not present in the mos t commonly used kinetic equation, known as the Waldmann-Snider equatio n. The physical conditions underlying the occurrence of the pole term in the quantum kinetic equation are analyzed. (C) 1997 American Instit ute of Physics.