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Spin dynamics in a one-dimensional Bose-Hubbard model | | M. B. Zvonarev
; V. V. Cheianov
; T. Giamarchi
; | | Date: |
17 Nov 2008 | | Abstract: | We investigate the dynamics of a one-dimensional strongly repulsive
ferromagnetic Bose-Hubbard model close to unit filling. We derive the
propagator of transverse spin waves and the corresponding spectral function. We
demonstrate that arbitrarily small hole doping leads to a strong modification
of the long-time dynamics of the spin propagator as compared with the undoped
case. For the spectral function this is seen in the non-trivial structure of
the magnon peak. | | Source: | arXiv, 0811.2676 | | Services: | Forum | Review | PDF | Favorites | |
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