From Quantum Dynamics to the Second Law of Thermodynamics

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In quantum systems which satisfy the hypothesis of equal weights for eigenstates [4], the maximum work principle (for extremely slow and relatively fast operation) is derived by using quantum dynamics alone. This may be a crucial step in establishing a firm connection between macroscopic thermodynamics and microscopic quantum dynamics. For special models introduced in [4,5], the derivation of the maximum work principle can be executed without introducing any unproved assumptions.