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arXiv 2103.02816math.OA
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C*-动力不变量与图的Toeplitz代数

C*-dynamical invariants and Toeplitz algebras of graphs

Queen Mary University of London(伦敦大学女王玛丽学院);University of Glasgow(格拉斯哥大学);Kyoto Institute of Technology(京都工芸繊維大学)

Chris Bruce, Takuya Takeishi

AI总结:

研究C*-动力系统的图Toeplitz代数的分区函数,通过C*-动力不变量恢复图论信息,并证明临界逆温度下的极值KMS态产生III_λ因子。

摘要:

在与Laca的联合工作中,我们精确地定义了C*-动力系统中的分区函数概念。本文计算了源自图的Toeplitz代数的C*-动力系统的分区函数,并以C*-动力不变量的形式显式恢复图论信息。此外,我们计算了有限(可约)图C*-代数上KMS态的类型,并证明临界逆温度下的极值KMS态产生III_λ因子。我们的起点是独立的结果,即用β-可和轨道参数化某一类C*-动力系统(源自群oid C*-代数)的分区函数。

英文摘要:

In recent joint work of the authors with Laca, we precisely formulated the notion of partition function in the context of C*-dynamical systems. Here, we compute the partition functions of C*-dynamical systems arising from Toeplitz algebras of graphs, and we explicitly recover graph-theoretic information in terms of C*-dynamical invariants. In addition, we compute the type for KMS states on C*-algebras of finite (reducible) graphs and prove that the extremal KMS states at critical inverse temperatures give rise to type III$_λ$ factors. Our starting point is an independent result parameterising the partition functions of a certain class of C*-dynamical systems arising from groupoid C*-algebras in terms of $β$-summable orbits.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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