Peierls Distortion and Quantum Solitons
Quantum Physics
2013-05-30 v2
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.
Cite
@article{arxiv.1205.0115,
title = {Peierls Distortion and Quantum Solitons},
author = {Chiara Marletto and Mario Rasetti},
journal= {arXiv preprint arXiv:1205.0115},
year = {2013}
}