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arXiv · quant-ph/0302187

Positive operator valued measures covariant with respect to an irreducible representation

G. Cassinelli·E. De Vito·A. Toigo
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Abstract

Given an irreducible representation of a group G, we show that all the covariant positive operator valued measures based on G/Z, where Z is a central subgroup, are described by trace class, trace one positive operators.

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G. Cassinelli, E. De Vito, A. Toigo. 2003-02-26. Positive operator valued measures covariant with respect to an irreducible representation. https://doi.org/10.1063/1.1598277

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