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- W4386150348 abstract "We establish rigorous bounds on dissipative transport in the disordered Klein-Gordon chain with quartic on-site potential, governed by a parameter $lambda$. At $lambda = 0$, the chain is harmonic and transport is fully suppressed by Anderson localization. For the anharmonic system at $lambda > 0$, our results show that dissipative effects set in on time scales that grow faster than any polynomial in $1/lambda$, as $lambdato 0$. From a technical perspective, the main novelty of our work is that we do not restrict ourselves to the atomic limit, i.e. we develop perturbation theory around the harmonic system with a fixed hopping strength between near oscillators. This allows us to compare our mathematical results with previous numerical work and contribute to the resolution of an ongoing debate in the physics community, as we explain in a companion paper arXiv:2308.10572." @default.
- W4386150348 created "2023-08-26" @default.
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- W4386150348 date "2023-08-22" @default.
- W4386150348 modified "2023-10-16" @default.
- W4386150348 title "Long persistence of localization in a disordered anharmonic chain beyond the atomic limit" @default.
- W4386150348 doi "https://doi.org/10.48550/arxiv.2308.11243" @default.
- W4386150348 hasPublicationYear "2023" @default.
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