Extremal covariant positive operator valued measures: the case of a compact symmetry group

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Given a unitary representation U of a compact group G and a transitive G-space $Ω$, we characterize the extremal elements of the convex set of all U-covariant positive operator valued measures.
minor corrections in version 2

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Mathematical Physics, Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/163212

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0801.4721
 http://arxiv.org/abs/0801.4721
 J. Math. Phys. 49, 063504 (2008)
 doi:10.1063/1.2940328

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arXiv