Spectrum of boundary states in the open Hubbard chain
- authored by
- Gerald Bedürftig, Holger Frahm
- Abstract
We use the Bethe ansatz solution for the one-dimensional Hubbard model with open boundary conditions and applied boundary fields to study the spectrum of bound states at the boundary. Depending on the strength of the boundary potentials, one finds that the true ground state contains a single charge or, for boundary potentials comparable with the Hubbard interaction, a pair of electrons in a bound state. If these are left unoccupied one finds holon and spinon bound states. We compute the finite size corrections to the low-lying energies in this system and use the predictions of boundary conformal field theory to study the exponents related to the orthogonality catastrophe.
- Organisation(s)
-
Institute of Theoretical Physics
- Type
- Article
- Journal
- Journal of Physics A: Mathematical and General
- Volume
- 30
- Pages
- 4139-4149
- No. of pages
- 11
- ISSN
- 0305-4470
- Publication date
- 21.06.1997
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- Statistical and Nonlinear Physics, Mathematical Physics, Physics and Astronomy(all)
- Electronic version(s)
-
https://doi.org/10.1088/0305-4470/30/12/006 (Access:
Unknown)
