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Nonlinear acoustic response of glasses in the tunneling model

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Stockburger, Jürgen T. ; Grifoni, Milena ; Sassetti, Maura
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Date of publication of this fulltext: 01 Oct 2021 09:47


The nonlinear acoustic response of low-energy excitations in insulating glasses is investigated using the tunneling model. An explicit evaluation of the sound velocity shift is performed which covers the whole temperature range of recent vibrating-reed experiments. Our results are in excellent agreement with experimental findings. The comparison with recent findings on the nonlinear response in ...


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