Nontopological thermal solitons in isotropic ferromagnetic lattices
| dc.creator | Theodorakopoulos, N. | |
| dc.date | 1995-06-14 | |
| dc.date.accessioned | 2026-07-07T08:10:53Z | |
| dc.date.available | 2026-07-07T08:10:53Z | |
| dc.description | The paper deals with the properties of thermally excited solitons of the isotropic spin-$S$ ferromagnetic chain with nearest-neighbor logarithmic interactions. The exact statistical mechanics of the interacting soliton gas is developed for the general case (arbitrary $S$, temperature and magnetic field). At low temperatures the model's thermodynamics coincides with that of the Heisenberg model. We present analytical approximations of the leading-order asymptotic behavior of the energy in three limiting cases: (a) zero field, low temperature, classical limit; (b) zero field, $T\to 0$, $S$ finite (quantum limit); (c) zero field, high temperature, classical limit. Cases (a) and (c) are examples of a dense gas of [non-topological] solitons; results are in agreement with those obtained by the transfer integral method. Case (b) illustrates the behavior of a dilute, yet strongly interacting soliton gas; results for the thermodynamics are very close to (but not identical with) spin-wave and/or Bethe-{\it Ansatz} predictions. | |
| dc.description | REVTEX 18 pages, to appear in Phys. Rev. B | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9506061 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9506061 | |
| dc.identifier | Phys. Rev. B 52, 9507 - 9513 (1995) | |
| dc.identifier | doi:10.1103/PhysRevB.52.9507 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/131950 | |
| dc.subject | Condensed Matter | |
| dc.title | Nontopological thermal solitons in isotropic ferromagnetic lattices | |
| dc.type | text |