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20012026
most citedCommutators, Spectral Trace Identities, and Universal Estimates for Eigenvalues

62 citations · 366 across the 29 of their papers we have counts for

collaborators

32 papers

math.SP2026

Smooth perturbation theory and generic Cantor spectrum for multi-dimensional monotone quasiperiodic operators

Ilya Kachkovskiy, Leonid Parnovski, Roman Shterenberg

We consider multi-dimensional quasiperiodic Schrödinger operators with monotone sawtooth-type potentials in the perturbative localization regime. We prove that a given gap is close…

math.SP2024★ 1 cited

Perturbative diagonalization and spectral gaps of quasiperiodic operators on with monotone potentials

Ilya Kachkovskiy, Leonid Parnovski, Roman Shterenberg

We obtain a perturbative proof of localization for quasiperiodic operators on with one-dimensional phase space and monotone sampling functions, in the regime of smal…

math.SP2024★ 3 cited

On gaps in the spectra of quasiperiodic Schrödinger operators with discontinuous monotone potentials

Ilya Kachkovskiy, Leonid Parnovski, Roman Shterenberg

We show that, for one-dimensional discrete Schrödinger operators, stability of Anderson localization under a class of rank one perturbations implies absence of intervals in spectra…

math.SP2022

Classical Wave methods and modern gauge transforms: Spectral Asymptotics in the one dimensional case

Jeffrey Galkowski, Leonid Parnovski, Roman Shterenberg

In this article, we consider the asymptotic behaviour of the spectral function of Schrödinger operators on the real line. Let have the form…

math-ph2021

The almost periodic gauge transform -- An abstract scheme with applications to Dirac Operators

Jean Lagacé, Sergey Morozov, Leonid Parnovski +2

One of the main tools used to understand both qualitative and quantitative spectral behaviour of periodic and almost periodic Schrödinger operators is the method of gauge transform…

math-ph2021

Ballistic Transport for Schrödinger Operators with Quasi-periodic Potentials

Yulia Karpeshina, Leonid Parnovski, Roman Shterenberg

We prove the existence of ballistic transport for a Schrödinger operator with a generic quasi-periodic potential in any dimension .