Subordinacy theory for extended CMV matrices
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DOI: 10.1007/s11425-020-1778-4
Abstract: We develop subordinacy theory for extended CMV matrices. That is, we provide explicit supports for the singular and absolutely continuous parts of the canonical spectral measure associated with a given extended CMV matrix in terms… read more here.
Keywords: theory extended; extended cmv; cmv matrices; subordinacy theory ... See more keywords
Spectral approximation for ergodic CMV operators with an application to quantum walks
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Mathematical Analysis and Applications"
DOI: 10.1016/j.jmaa.2018.06.056
Abstract: We establish concrete criteria for fully supported absolutely continuous spectrum for ergodic CMV matrices and purely absolutely continuous spectrum for limit-periodic CMV matrices. We proceed by proving several variational estimates on the measure of the… read more here.
Keywords: cmv; spectral approximation; cmv matrices; ergodic cmv ... See more keywords