Universal Sound Absorption in Amorphous Solids: A Theory of Elastically Coupled Generic Blocks

preprint2011arXivOpen access

Abstract

Glasses are known to exhibit quantitative universalities at low temperatures, the most striking of which is the ultrasonic attenuation coefficient 1/Q. In this work we develop a theory of coupled generic blocks with a certain randomness property to show that universality emerges essentially due to the interactions between elastic blocks, regardless of their microscopic nature.

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