Geodesic
Ergodic properties and KMS conditions on $C^*$-symbolic dynamical systems
Documenta mathematica, Tome 16 (2011), pp. 133-175.

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: A $C^*$-symbolic dynamical system $({\mathcal A}, \rho, \Sigma)$ consists of a unital $C^*$-algebra ${\mathcal A}$ and a finite family ${ \rho_\alpha }_{\alpha \in \Sigma}$ of endomorphisms $\rho_\alpha $ of ${\mathcal A}$ indexed by symbols $\alpha$ of $\Sigma$ satisfying some conditions. The endomorphisms $\rho_\alpha, \alpha \in \Sigma $ yield both a subshift $\Lambda_\rho$ and a $C^*$-algebra ${\mathcal O}_\rho$. We will study ergodic properties of the positive operator $lambda_\rho = \sum_{\alpha \in \Sigma}\rho_\alpha$ on ${\mathcal A}$. We will next introduce KMS conditions for continuous linear functionals on ${\mathcal O}_\rho$ under gauge action at inverse temperature taking its value in complex numbers. We will study relationships among the eigenvectors of $lambda_\rho$ in ${\mathcal A}^*$, the continuous linear functionals on ${\mathcal O}_\rho$ satisfying KMS conditions and the invariant measures on the associated one-sided shifts. We will finally present several examples of continuous linear functionals satisfying KMS conditions.
Classification : 46L55, 37B10, 37D35
Keywords: $C^*$-algebra, symbolic dynamics, subshift, ergodic, KMS condition, invariant measure 
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     author = {Matsumoto, Kengo},
     title = {Ergodic properties and {KMS} conditions on $C^*$-symbolic dynamical systems},
     journal = {Documenta mathematica},
     pages = {133--175},
     publisher = {mathdoc},
     volume = {16},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DOCMA_2011__16__a29/}
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Matsumoto, Kengo. Ergodic properties and KMS conditions on $C^*$-symbolic dynamical systems. Documenta mathematica, Tome 16 (2011), pp. 133-175. http://geodesic.mathdoc.fr/item/DOCMA_2011__16__a29/