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Integrable impurities for an open fermion chain
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Guan, Xi-Wen, Grimm, Uwe, Roemer, Rudolf A. and Schreiber, Michael (2000) Integrable impurities for an open fermion chain. Journal of Physics A: Mathematical and General, 33 (21). pp. 3863-3879. doi:10.1088/0305-4470/33/21/302
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Official URL: http://dx.doi.org/10.1088/0305-4470/33/21/302
Abstract
Employing the graded versions of the Yang-Baxter equation and the reflection equations, we construct two kinds of integrable impurities for a small-polaron model with general open boundary conditions: (a) we shift the spectral parameter of the local Lax operator at arbitrary sites in the bulk and (b) we embed the impurity fermion vertex at each boundary of the chain. The Hamiltonians with different types of impurity terms are given explicitly. The Bethe ansatz equations, as well as the eigenvalues of the Hamiltonians, are constructed by means of the quantum inverse scattering method. In addition, we discuss the ground-state properties in the thermodynamic limit.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science > Physics | ||||
| Journal or Publication Title: | Journal of Physics A: Mathematical and General | ||||
| Publisher: | IOP Publishing | ||||
| ISSN: | 0305-4470 | ||||
| Official Date: | 2000 | ||||
| Dates: |
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| Volume: | 33 | ||||
| Number: | 21 | ||||
| Page Range: | pp. 3863-3879 | ||||
| DOI: | 10.1088/0305-4470/33/21/302 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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