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arXiv · cond-mat/9812273

Multiphonon anharmonic decay of a quantum mode

V. Hizhnyakov
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Abstract

A nonperturbative theory of multiphonon anharmonic transitions between energy levels of a local mode is presented. It is shown that the rate of transitions rearranges near the critical level number $n_{cr}$: at smaller $n$ the process slows down, while at larger $n$ it accelerates in time, causing a jump-like loss of energy followed by the generation of phonon bursts. Depending on parameters, phonons are emitted in pairs, triplets etc.

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V. Hizhnyakov. 1998-12-16. Multiphonon anharmonic decay of a quantum mode. https://doi.org/10.1209/epl%2Fi1999-00180-y

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