Monotonicity of a relative Rényi entropy

Dec 1, 2013
Published in:
  • J.Math.Phys. 54 (2013) 12, 122201
  • Published: Dec 1, 2013

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Abstract: (AIP)
We show that a recent definition of relative Rényi entropy is monotone under completely positive, trace preserving maps. This proves a recent conjecture of Müller-Lennert et al [“On quantum Rényi entropies: A new definition, some properties,” J. Math. Phys. 54, 122203 (2013); e-print arXiv:1306.3142v1; see also e-print arXiv:1306.3142].