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Hilbert-Schmidt Separability Probabilities and Noninformativity of Priors | | Paul B. Slater
; | | Date: |
20 Jul 2005 | | Subject: | quant-ph | | Abstract: | The Horodecki family employed the Jaynes maximum-entropy principle, fitting the mean (b_{1}) of the Bell-CHSH observable (B). This model was extended by Rajagopal by incorporating the dispersion (sigma_{1}^2) of the observable, and by Canosa and Rossignoli, by generalizing the observable (B_{alpha}). We further extend the Horodecki one-parameter model in both these manners, obtaining a three-parameter (b_{1},sigma_{1}^2,alpha) two-qubit model, for which we find a highly interesting/intricate continuum (-infty < alpha < infty) of Hilbert-Schmidt (HS) separability probabilities -- in which, the golden ratio is featured. Our model can be contrasted with the three-parameter (b_{q}, sigma_{q}^2,q) one of Abe and Rajagopal, which employs a q(Tsallis)-parameter rather than $alpha$, and has simply q-invariant HS separability probabilities of 1/2. Our results emerge in a study initially focused on embedding certain information metrics over the two-level quantum systems into a q-framework. We find evidence that Srednicki’s recently-stated biasedness criterion for noninformative priors yields rankings of priors fully consistent with an information-theoretic test of Clarke, previously applied to quantum systems by Slater. | | Source: | arXiv, quant-ph/0507203 | | Services: | Forum | Review | PDF | Favorites | |
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