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A remark on the concavity of entropy |
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| Authors: | A Wehrl |
| Institution: | 1. Institut für Theoretische Physik, Universit?t Wien, Vienna, Austria |
| Abstract: | We investigate to what extent theorems about quantum mechanical or classical entropy can be generalized to functionals of the type ρ→Tr f(ρ), or ψ→∫f(ψ)dμ, respectively, wheref is an arbitrary concave function. |
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