Uniform existence of the integrated density of states for models on $\ZZ^d$

Abstract

We provide an ergodic theorem for certain Banach-space valued functions on structures over $\ZZ^d$, which allow for existence of frequencies of finite patterns. As an application we obtain existence of the integrated density of states for associated finite-range operators in the sense of convergence of the distributions with respect to the supremum norm. These results apply to various examples including periodic operators, percolation models and nearest-neighbour hopping on the set of visible points. Our method gives explicit bounds on the speed of convergence in terms of the speed of convergence of the underlying frequencies. It uses neither von Neumann algebras nor a framework of random operators on a probability space.

15 pages

References in corpus (2)

• Hamiltonians on discrete structures: Jumps of the integrated density of states and uniform convergence
• Aperiodic order, integrated density of states and the continuous algebras of John von Neumann

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