Archivio Istituzionale della RicercaA 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, Carla; Rasetti, Mario. - In: PHYSICA. A. - ISSN 0378-4371. - 129:1(1984), pp. 165-183. [10.1016/0378-4371(84)90026-8]
Quantum Ising-like spin-j model with multipole-multipole interactions: Second order mean-field approach
BUZANO, Carla;RASETTI, Mario
1984
Abstract
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.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/11583/1845908
Attenzione
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo