English

Continuum Fibonacci Schr\"odinger Operators in the Strongly Coupled Regime

Spectral Theory 2026-03-26 v1 Mathematical Physics Dynamical Systems math.MP

Abstract

We study Schr\"odinger operators on the real line whose potentials are generated by the Fibonacci substitution sequence and a rule that replaces symbols by compactly supported potential pieces. We consider the case in which one of those pieces is identically zero, and study the dimension of the spectrum in the large-coupling regime. Our results include a generalization of theorems regarding explicit examples that were studied previously and a counterexample that shows that the na\"ive generalization of previously established statements is false. In particular, in the aperiodic case, the local Hausdorff dimension of the spectrum does not necessarily converge to zero uniformly on compact subsets as the coupling constant is sent to infinity.

Keywords

Cite

@article{arxiv.2603.24462,
  title  = {Continuum Fibonacci Schr\"odinger Operators in the Strongly Coupled Regime},
  author = {David Damanik and Mark Embree and Jake Fillman and Anton Gorodetski and May Mei},
  journal= {arXiv preprint arXiv:2603.24462},
  year   = {2026}
}

Comments

29 pages