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Phononic frictional losses of a particle crossing a crystal: linear-response theory

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arxiv 2501.08239 v2 pith:HVQDGEQM submitted 2025-01-14 cond-mat.mes-hall cond-mat.other

Phononic frictional losses of a particle crossing a crystal: linear-response theory

Gabriele Riva , Giacomo Piscia , Nicolas Trojani , Giuseppe E. Santoro , Erio Tosatti , Nicola Manini This is my paper
classification cond-mat.mes-hall cond-mat.other
keywords crystalfrictionfrictionallinear-responsemeansparticlephononicslider
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We address weak-coupling frictional sliding with phononic dissipation by means of analytic many-body techniques. Our model consists of a particle (the "slider") moving through a two- or three-dimensional crystal and interacting weakly with its atoms, and therefore exciting phonons. By means of linear-response theory we obtain explicit expressions for the friction force slowing down the slider as a function of its speed, and compare them to the friction obtained by simulations, demonstrating a remarkable accord.

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