On the Riemannian metric of Ξ±-entropies
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DΓ©nes Petz; Hiroshi Hasegawa
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Article
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1996
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Springer
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English
β 209 KB
The Riemannian metric induced by quantum s-entropies is proven to be monotone under stochastic mappings on the set of density matrices. The length of tangent vectors is essentially the Wigner-Yanase-Dyson skew information in this setting.