# A family of non-cocycle conjugate E_0-semigroups obtained from boundary weight doubles

@article{Jankowski2010AFO,
title={A family of non-cocycle conjugate E\_0-semigroups obtained from boundary weight doubles},
author={Christopher Jankowski},
journal={arXiv: Operator Algebras},
year={2010}
}
We have seen that if \phi: M_n(\C) \rightarrow M_n(\C) is a unital q-positive map and \nu is a type II Powers weight, then the boundary weight double (\phi, \nu) induces a unique (up to conjugacy) type II_0 E_0-semigroup. Let \phi: M_n(\C) \rightarrow M_n(\C) and \psi: M_{n'}(\C) \rightarrow M_{n'}(\C) be unital rank one q-positive maps, so for some states \rho \in M_n(\C)^* and \rho' \in M_{n'}(\C)^*, we have \phi(A)=\rho(A)I_n and \psi(D) = \rho'(D)I_{n'} for all A \in M_n(\C) and D \in M_{n…
1 Citations

### Gauge groups of E_0-semigroups obtained from Powers weights

• Mathematics
• 2011
The gauge group is computed explicitly for a family of E_0-semigroups of type II_0 arising from the boundary weight double construction introduced earlier by Jankowski. This family contains many

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