Geodesic
Brukner--Zeilinger invariant information
Teoretičeskaâ i matematičeskaâ fizika, Tome 151 (2007) no. 2, pp. 302-310

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We present an alternative interpretation of the notion of invariant information by establishing that it is directly related to the total ordinary variance of a quantum state. Here, "total" means summing the variance over any complete orthogonal set of observables or, equivalently, averaging over a certain sufficiently general ensemble of the observables. This simple, intuitive substratum of the Brukner–Zeilinger invariant information sheds further light on the informational and statistical nature of quantum measurements.
Mots-clés : invariant information
Keywords: quantum measurement, total variance, renormalization. 
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     author = {Sh. Luo},
     title = {Brukner--Zeilinger invariant information},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {302--310},
     publisher = {mathdoc},
     volume = {151},
     number = {2},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2007_151_2_a8/}
}
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Sh. Luo. Brukner--Zeilinger invariant information. Teoretičeskaâ i matematičeskaâ fizika, Tome 151 (2007) no. 2, pp. 302-310. http://geodesic.mathdoc.fr/item/TMF_2007_151_2_a8/