Conserved Ordering Dynamics of Heisenberg Spins with Torque
| dc.creator | Das, Jayajit | |
| dc.creator | Rao, Madan | |
| dc.date | 1999-03-02 | |
| dc.date.accessioned | 2026-07-07T03:12:55Z | |
| dc.date.available | 2026-07-07T03:12:55Z | |
| dc.description | We show that a torque induced by the local molecular field drives the zero-temperature ordering dynamics of a conserved Heisenberg magnet to a new fixed point, characterised by exponents z=2 and $λ\approx 5.15$. Numerical solutions of the Langevin equation indicate that theories using a Gaussian closure are inconsistent even when the torque is absent. The torque is relevant even for quenches to T_c, with exponents $z=4-ε/2$ and $λ= d$ (where $ε= 6-d$). Indeed $λ$ is always equal to d for quenches to T_c whenever the order parameter is conserved. | |
| dc.description | 4 pages, 4 eps figures. Submitted to Physical Review E | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9903041 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9903041 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/29100 | |
| dc.subject | Statistical Mechanics | |
| dc.title | Conserved Ordering Dynamics of Heisenberg Spins with Torque | |
| dc.type | text |