A quantum Ising-like spin-j model, characterized by arbitrary multipole-multipole interactions as well as external fields, is proposed and analyzed. A thorough discussion of the algebraic properties of the dynamical variables (which belong to SU(2j+1)) is performed, whereby by the application of an improved version of the mean-field theory (which has the usual mean-field theory as its zeroeth order approximation) an explicit expression for the free energy is derived.
Quantum Ising-like spin-j model with multipole-multipole interactions: Second order mean-field approach / BUZANO C.; RASETTI M.. - In: PHYSICA. A. - ISSN 0378-4371. - 129:1(1984), pp. 165-183.
|Titolo:||Quantum Ising-like spin-j model with multipole-multipole interactions: Second order mean-field approach|
|Data di pubblicazione:||1984|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/0378-4371(84)90026-8|
|Appare nelle tipologie:||1.1 Articolo in rivista|
File in questo prodotto: