Finite-temperature mobility of a particle coupled to a fermionic environment
- 15 August 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 54 (7) , 4375-4378
- https://doi.org/10.1103/physrevb.54.4375
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 an analysis of the finite-temperature static mobility based on a random matrix theory description of the many-body Hamiltonian. © 1996 The American Physical Society.Keywords
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