Zvonarev, M. B. and Cheianov, Vadim V. and Giamarchi, T. (2007) Spin dynamics in a one-dimensional ferromagnetic Bose Gas. Physical Review Letters, 99 (24). p. 240404. ISSN 1079-7114
Full text not available from this repository.Abstract
We investigate the propagation of spin excitations in a one-dimensional ferromagnetic Bose gas. While the spectrum of longitudinal spin waves in this system is soundlike, the dispersion of transverse spin excitations is quadratic, making a direct application of the Luttinger liquid theory impossible. By using a combination of different analytic methods we derive the large time asymptotic behavior of the spin-spin dynamical correlation function for strong interparticle repulsion. The result has an unusual structure associated with a crossover from the regime of trapped spin wave to an open regime and does not have analogues in known low-energy universality classes of quantum 1D systems.
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Physical Review Letters |
| Subjects: | Q Science > QC Physics |
| Departments: | Faculty of Science and Technology > Physics |
| ID Code: | 18676 |
| Deposited By: | ep_ss_importer |
| Deposited On: | 29 Oct 2008 11:04 |
| Refereed?: | Yes |
| Published?: | Published |
| Last Modified: | 26 Jul 2012 15:20 |
| Identification Number: | |
| URI: | http://eprints.lancs.ac.uk/id/eprint/18676 |
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