- Conference date: 29-31 July 2002
- Location: San Diego, California (USA)
We consider a composite system consisting of two identical quantum systems. Initially the two subsystems are separated so that the initial state of the system is a product state, and we assume that both factors are canonical equilibrium states, but at different temperatures. Then the two systems are thermally coupled which we describe by a certain class of interactions. We show ‐ at least numerically ‐ the following version of the second law: heat flows always from the hotter to the colder system.
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