Finite temperature mobility of a particle coupled to a fermion environment
Condensed Matter
2009-10-28 v1
Abstract
We study numerically the finite temperature and frequency mobility of a particle coupled by a local interaction to a system of spinless fermions in one dimension. We find that when the model is integrable (particle mass equal to the mass of fermions) the static mobility diverges. Further, an enhanced mobility is observed over a finite parameter range away from the integrable point. We present a novel analysis of the finite temperature static mobility based on a random matrix theory description of the many-body Hamiltonian.
Keywords
Cite
@article{arxiv.cond-mat/9603088,
title = {Finite temperature mobility of a particle coupled to a fermion environment},
author = {H. Castella and X. Zotos},
journal= {arXiv preprint arXiv:cond-mat/9603088},
year = {2009}
}
Comments
11 pages (RevTeX), 5 Postscript files, compressed using uufiles