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JOURNALS // Matematicheskie Zametki // Archive

Mat. Zametki, 2025 Volume 118, Issue 2, Pages 375–390 (Mi mzm14916)

Papers published in the English version of the journal

Adiabatic Evolution Generated by a Schrödinger Operator with a Continuous Spectrum

A. A. Fedotova, V. A. Sergeevb

a Saint Petersburg State University
b Chebyshev Laboratory, St. Petersburg State University, Department of Mathematics and Mechanics

Abstract: For a model nonstationary Schrödinger equation with a potential depending on time $\tau$ and with a small parameter $\varepsilon$ in front of the derivative with respect to $\tau$, we investigate a solution that in the case of a potential independent of time has the form $e^{-iE\tau/\varepsilon} \psi(x,E)$, where $\psi(\cdot,E)$ is a generalized eigenfunction of the stationary Schrödinger operator corresponding to a value $E$ of the spectral parameter, $E$ being in the continuous spectrum.

Keywords: nonstationary Schrödinger equation, continuous spectrum, time-dependent potential, adiabatic approximation

Received: 19.06.2025
Revised: 19.06.2025

Language: English


 English version:
Mathematical Notes, 2025, 118:2, 375–390

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© Steklov Math. Inst. of RAS, 2026