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quant-ph1999
On the Curvature of Monotone Metrics and a Conjecture Concerning the Kubo-Mori Metric
J. Dittmann
It is the aim of this article to determine curvature quantities of an arbitrary Riemannian monotone metric on the space of positive matrices resp. nonsingular density matrices. Spe…
quant-ph1998
Yang-Mills Equation and Bures Metric
J. Dittmann
It is shown that the connection form (gauge field) related to the generalization of the Berry phase to mixed states proposed by Uhlmann satisfies the source-free Yang-Mills equatio…