Threshold singularities in the one-dimensional Hubbard model
We consider excitations with the quantum numbers of a hole in the one-dimensional Hubbard model below half-filling. We calculate the finite-size corrections to the energy. The results are then used to determine threshold singularities in the single-particle Green's function for commensurate fil...
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| Μορφή: | Journal article |
| Γλώσσα: | English |
| Έκδοση: |
2010
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