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Journal of Magnetism and Magnetic Materials

Equilibrium and non-equilibrium dynamics of quasiparticles for locally correlated systems in a magnetic field

Johannes Bauer, Alex C. Hewson, Akira Oguri

Published Nov 16, 2006• 6 citations
Publisher
DOI
10.1016/j.jmmm.2006.10.729

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A closed system of the equations for the local Bloch vectors and spin correlation functions is obtained by decomplexification of the Liouville-von Neumann equation for 4 magnetic particles with the exchange interaction that takes place in an arbitrary time-dependent external magnetic field.The analytical and numerical analysis of the quantum thermodynamic variables is carried out depending on separable mixed initial state and the magnetic field modulation.Under unitary evolution, non-equilibrium reversible dynamics of power production in the finite environment is investigated.