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Journal of Spectral Theory
Article . 2023 . Peer-reviewed
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zbMATH Open
Article . 2023
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https://dx.doi.org/10.48550/ar...
Article . 2021
License: arXiv Non-Exclusive Distribution
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Ballistic transport for limit-periodic Schrödinger operators in one dimension

Authors: Giorgio Young;

Ballistic transport for limit-periodic Schrödinger operators in one dimension

Abstract

In this paper, we consider the transport properties of the class of limit-periodic continuum Schrödinger operators whose potentials are approximated exponentially quickly by a sequence of periodic functions. For such an operator H , and X_H(t) the Heisenberg evolution of the position operator, we show the limit of \frac{1}{t}X_H(t)\psi as t\to\infty exists and is nonzero for \psi\ne 0 belonging to a dense subspace of initial states which are sufficiently regular and of suitably rapid decay. This is viewed as a particularly strong form of ballistic transport, and this is the first time it has been proven in a continuum almost periodic non-periodic setting. In particular, this statement implies that for the initial states considered, the second moment grows quadratically in time.

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Keywords

Mathematics - Spectral Theory, Schrödinger operator, Schrödinger equation, almost periodic Schrödinger operators, ballistic transport, Time-dependent Schrödinger equations and Dirac equations, FOS: Mathematics, FOS: Physical sciences, Mathematical Physics (math-ph), Spectral Theory (math.SP), Mathematical Physics, Selfadjoint operator theory in quantum theory, including spectral analysis

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Top 10%
Average
Average
Green
gold