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The Brody-Hughston Fisher Information Metric
[article]
2003
arXiv
pre-print
We study the interrelationships between the Fisher information metric recently introduced, on the basis of maximum entropy considerations, by Brody and Hughston (quant-ph/9906085) and the monotone metrics, as explicated by Petz and Sudar. This new metric turns out to be not strictly monotone in nature, and to yield (via its normalized volume element) a prior probability distribution over the Bloch ball of two-level quantum systems that is less noninformative than those obtained from any of the
arXiv:quant-ph/0304029v2
fatcat:wdwcoujxbnhznfyp5zah4fxmay