Title: Non-equilibrium reversible dynamics of work production in four-spin system in a magnetic field
Author(s):

E.A. Ivanchenko (Institute for Theoretical Physics, National Science Center "Kharkov Institute of Physics and Technology", 1 Akademichna Str., 61108 Kharkiv, Ukraine)

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.

Key words: reversible dynamics, work production, spin system, magnetic field
PACS: 05.30.-d, 03.65.Aa, 44.05.+e, 05.70.Ln

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