Boundary susceptibility in the open XXZ-chain
| dc.creator | Bortz, Michael | |
| dc.creator | Sirker, Jesko | |
| dc.date | 2005-01-24 | |
| dc.date.accessioned | 2026-07-07T03:03:24Z | |
| dc.date.available | 2026-07-07T03:03:24Z | |
| dc.description | In the first part we calculate the boundary susceptibility $χ_B$ in the open $XXZ$-chain at zero temperature and arbitrary magnetic field $h$ by Bethe ansatz. We present analytical results for the leading terms when $|h|\ll α$, where $α$ is a known scale, and a numerical solution for the entire range of fields. In the second part we calculate susceptibility profiles near the boundary at finite temperature $T$ numerically by using the density-matrix renormalization group for transfer matrices and analytically for $T\ll 1$ by field theoretical methods. Finally we compare $χ_B$ at finite temperature with a low-temperature asymptotics which we obtain by combining our Bethe ansatz result with recent predictions from bosonization. | |
| dc.description | 22 pages, 8 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0501559 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0501559 | |
| dc.identifier | J. Phys. A: Math. Gen. 38, 5957 (2005) | |
| dc.identifier | doi:10.1088/0305-4470/38/26/009 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/25737 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Boundary susceptibility in the open XXZ-chain | |
| dc.type | text |