Non injectivity of the q-deformed von Neumann algebra

Abstract

We prove that the von Neumann algebra generated by q-gaussians is not injective as soon as the dimension of the underlying Hilbert space is greater than 1. Our approach is based on a vector valued Khintchine type inequality for Wick products. The same proof also works for the more general setting of a Yang-Baxter deformation. Our techniques can also be extended to the so called q-Araki-Woods von Neumann algebras recently introduced by Hiai. In this latter case, we obtain the non injectivity under some asssumption on the spectral set of the positive operator associated with the deformation.

Cited by in corpus (6)

• Some estimates for non-microstates free entropy dimension, with applications to $q$-semicircular families
• Non-commutative Khintchine type inequalities associated with free groups
• Asymptotic matricial models and QWEP property for q-Araki-Woods von Neumann algebras
• The von Neumann algebra generated by t-gaussians
• On the classification and modular extendability of E${}_0$-semigroups on factors
• Maximal amenability of the generator subalgebra in $q$-Gaussian von Neumann algebras