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arXiv · 1205.0115

Peierls Distortion and Quantum Solitons

Chiara Marletto·Mario Rasetti
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Abstract

Peierls distortion and quantum solitons are two hallmarks of 1-dimensional condensed-matter systems. Here we propose a quantum model for a one-dimensional system of non-linearly interacting electrons and phonons, where the phonons are represented via coherent states. This model permits a unified description of Peierls distortion and quantum solitons. The non-linear electron-phonon interaction and the resulting deformed symmetry of the Hamiltonian are distinctive features of the model, of which that of Su, Schrieffer and Heeger can be regarded as a special case.

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Chiara Marletto, Mario Rasetti. 2012-05-04. Peierls Distortion and Quantum Solitons. https://doi.org/10.1103/physrevlett.109.126405

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