Irreversible evolution of a charged spin 1/2 particle analyzed on the basis of subdynamics theory

摘要

The time evolution of a charged spin 1/2 particle interacting with a magneticfield is analyzed in the framework of the complex spectral theory, based onPrigogine's principles that provide a rigorous description of irreversibility.A detailed survey of the irreversible relaxation process of the spin 1/2particle is carried out on the basis of the subdynamics theory. We obtain theresults for the Markovian and the non-Markovian evolution of the chargedparticle.