136 citations · 418 across the 34 of their papers we have counts for
37 papers
A Dixmier type averaging property of automorphisms on a -algebra
Mikael Rørdam
In his study of the relative Dixmier property for inclusions of von Neumann algebras and of -algebras, Popa considered a certain property of automorphisms on -algebras, t…
Inclusions of -algebras arising from fixed-point algebras
Siegfried Echterhoff, Mikael Rørdam
We examine inclusions of -algebras of the form , where and are groups acting on a unital simple -algebra by outer automorphisms…
Irreducible inclusions of simple C-algebras
Mikael Rørdam
The literature contains interesting examples of inclusions of simple C-algebras with the property that all intermediate C-algebras likewise are simple. In this article we t…
Factorizable maps and traces on the universal free product of matrix algebras
Magdalena Musat, Mikael Rørdam
We relate factorizable quantum channels on , for , via their Choi matrix, to certain correlation matrices, which, in turn, are shown to be parametrized by traces on t…
Non-closure of quantum correlation matrices and factorizable channels that require infinite dimensional ancilla
Magdalena Musat, Mikael Rørdam
We show that there exist factorizable quantum channels in each dimension which do not admit a factorization through any finite dimensional von Neumann algebra, and do requ…
Fixed-points in the cone of traces on a C*-algebra
Mikael Rordam
Nicolas Monod introduced the class of groups with the fixed-point property for cones, characterized by always admitting a non-zero fixed point whenever acting (suitably) on proper…