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Coherent oscillation in a linear quantum system coupled to a thermal bath

N. F. Bell·R. F. Sawyer·R. R. Volkas
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Abstract

We consider the time development of the density matrix for a system coupled to a thermal bath, in models that go beyond the standard two-level systems through addition of an energy excitation degree of freedom and through the possibility of the replacement of the spin algebra by a more complex algebra. We find conditions under which increasing the coupling to the bath above a certain level decreases the rate of entropy production, and in which the limiting behavior is a dissipationless sinusoidal oscillation that could be interpreted as the synchronization of many modes of the uncoupled system.

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N. F. Bell, R. F. Sawyer, R. R. Volkas. 2000-08-30. Coherent oscillation in a linear quantum system coupled to a thermal bath. https://arxiv.org/abs/quant-ph/0008133

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