ISSN:
1432-0916
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mathematics
,
Physics
Notes:
Abstract We consider families of operators,H ω, on ℓ2 given by (H ω u)(n)=u(n+1)+u(n−1)+V ω(n)u(n), whereV ω is a stationary bounded ergodic sequence. We prove analogs of Kotani's results, including that for a.e. ω,σac(H ω) is the essential closure of the set ofE where γ(E) the Lyaponov index, vanishes and the result that ifV ω is non-deterministic, then σac is empty.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01211829