Elementary Proof of Petz–Hasegawa Theorem

We give an elementary proof of the following important result first stated by Petz–Hasegawa: .

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Bibliographic Details
Published inLetters in mathematical physics Vol. 101; no. 3; pp. 355 - 359
Main Author Furuta, Takayuki
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.09.2012
Subjects
Complex Systems
Geometry
Group Theory and Generalizations
Mathematical and Computational Physics
Physics
Physics and Astronomy
Theoretical
87P15
Petz–Hasegawa theorem
47A63
operator monotone function
94A17
Löwner–Heinz inequality
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Summary:We give an elementary proof of the following important result first stated by Petz–Hasegawa: .
ISSN:0377-9017
1573-0530
DOI:10.1007/s11005-012-0568-3