| Issue |
J. Phys. Colloques
Volume 49, Number C8, Décembre 1988
Proceedings of the International Conference on Magnetism
|
|
|---|---|---|
| Page(s) | C8-1589 - C8-1590 | |
| DOI | https://doi.org/10.1051/jphyscol:19888727 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1589-C8-1590
DOI: 10.1051/jphyscol:19888727
1 Dipartimento di Matematica, Universitá di Cagliari, Cagliari, Itali
2 Dipartimento di Fisica, Universitá di Firenze, Firenze, Italy
3 Istituto di Elettronica Quantistica, C.N.R., Firenze, Italy
J. Phys. Colloques 49 (1988) C8-1589-C8-1590
DOI: 10.1051/jphyscol:19888727
DOUBLE SINE-GORDON MODEL FOR THE CLASSICAL AND QUANTUM THERMODYNAMICS OF MAGNETIC CHAINS
R. Giachetti1, V. Tognetti2 et R. Vaia31 Dipartimento di Matematica, Universitá di Cagliari, Cagliari, Itali
2 Dipartimento di Fisica, Universitá di Firenze, Firenze, Italy
3 Istituto di Elettronica Quantistica, C.N.R., Firenze, Italy
Abstract
The Double Sine-Gordon (DSG) model has been often used for describing anisotropic spin chains. We firstly present classical transfer matrix calculations of thermodynamic quantities. Secondly, the effects of the quantum fluctuations are taken into account by means of an effective potential, which was successfully used for SG models.