论文标题

ii $ _1 $因素的属性的光谱差距(t)

Spectral gap characterizations of property (T) for II$_1$ factors

论文作者

Tan, Hui

论文摘要

对于II $ _1 $的因素,我们表明属性(T)等同于弱频谱差距,将任何包含在较大的奇特von Neumann代数中。我们还表明,在弱混合双模型中没有非零的几乎中央向量是II $ _1 $因子的属性(t),这使我们能够获得更强的属性表征(t),其中只需要在任何不可纳入纳入中的弱频谱差距。

For II$_1$ factors, we show that property (T) is equivalent to weak spectral gap in any inclusion into a larger tracial von Neumann algebra. We also show that not having non-zero almost central vectors in weakly mixing bimodules characterizes property (T) for II$_1$ factors, which allows us to obtain a stronger characterization of property (T) where only weak spectral gap in any irreducible inclusion is required.

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