An Asymptotic Property of Factorizable Completely Positive Maps and the Connes Embedding Problem

@article{Haagerup2014AnAP,
  title={An Asymptotic Property of Factorizable Completely Positive Maps and the Connes Embedding Problem},
  author={Uffe Haagerup and Magdalena Musat},
  journal={Communications in Mathematical Physics},
  year={2014},
  volume={338},
  pages={721-752}
}
We establish a reformulation of the Connes embedding problem in terms of an asymptotic property of factorizable completely positive maps. We also prove that the Holevo–Werner channels $${W_n^-}$$Wn- are factorizable, for all odd integers $${n\neq 3}$$n≠3. Furthermore, we investigate factorizability of convex combinations of $${W_3^+}$$W3+ and $${W_3^-}$$W3-, a family of channels studied by Mendl and Wolf, and discuss asymptotic properties for these channels. 

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