Strong-disorder localisation under absence of supported formal solutions

Let H(g)H(g) be a Γ\Gamma-trimmed random Schrödinger operator on Zd\mathbb{Z}^d satisfying the Assumptions. Suppose that the complement of Γ\Gamma is a union of finite connected components, and let λR\lambda \in \mathbb{R} be such that the eigenvalue equation

H(0)ψ=λψH(0)\psi=\lambda\psi

has no non-trivial formal solution ψ\psi supported on Γc\Gamma^c. Strong-disorder localisation conjecture. Then the fractional-moment bound holds for sufficiently large gg.

This would generalise the two preceding localisation theorems: localisation away from the spectrum of the trimmed operator, and localisation under the double-insulation condition. The conjecture concerns Anderson localisation at energies where no formal solution supported on the untrimmed components obstructs the fractional-moment method.

Sources & referencesView supporting material

Primary source

Alexander Elgart and Sasha Sodin, “The trimmed Anderson model at strong disorder: localisation and its breakup”, arXiv:1409.8009 (2015).

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