Sachdev, Subir ; Damle, Kedar (1997) Low temperature spin diffusion in the one-dimensional quantum O(3)nonlinear σ model Physical Review Letters, 78 (5). Article ID 943. ISSN 0031-9007
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Official URL: http://journals.aps.org/prl/abstract/10.1103/PhysR...
Related URL: http://dx.doi.org/10.1103/PhysRevLett.78.943
Abstract
An effective, low temperature, classical model for spin transport in the one-dimensional, gapped, quantum O(3) nonlinear σ model is developed. Its correlators are obtained by a mapping to a model solved earlier by Jepsen. We obtain universal functions for the ballistic-to-diffusive crossover and the value of the spin diffusion constant, and these are claimed to be exact at low temperatures. Implications for experiments on one-dimensional insulators with a spin gap are noted.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 103558 |
| Deposited On: | 09 Mar 2018 11:29 |
| Last Modified: | 09 Mar 2018 11:29 |
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