Theory of hopping motion of a heavy particle interacting with a degenerate electron gas
- 27 July 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 59 (4) , 469-472
- https://doi.org/10.1103/physrevlett.59.469
Abstract
A heavy particle moving by hopping on a lattice is considered. The screening and assisted hopping due to the electrons result in logarithmic contributions to the scattering amplitude. In the study of a one-dimensional model, scaling similar to the anisotropic antiferromagnetic Kondo problem is found. The large-scaled couplings reduce the width of the heavy particle band essentially. The results obtained hold also for heavy particles forming a degenerate Fermi gas.Keywords
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