FINITE-TEMPERATURE SU(3) LMG MODEL - MEAN-FIELD VERSUS EXACT CALCULATION

Authors
DAPROVIDENCIA C DAPROVIDENCIA J TERRA MO
Citation
C. Daprovidencia et al., FINITE-TEMPERATURE SU(3) LMG MODEL - MEAN-FIELD VERSUS EXACT CALCULATION, Journal of physics. G, Nuclear and particle physics, 22(3), 1996, pp. 351-360
Citations number
11
Categorie Soggetti
Physics, Particles & Fields","Physics, Nuclear
Journal title
Journal of physics. G, Nuclear and particle physics → ACNP
ISSN journal
09543899
Volume
22
Issue
3
Year of publication
1996
Pages
351 - 360
Database
ISI
SICI code
0954-3899(1996)22:3<351:FSLM-M>2.0.ZU;2-2
Abstract
A variational approach is applied to the description of temperature ef fects in a N-particle exactly soluble schematic model, with SU(3) symm etry. The ground-state energy for different couplings and the strength distribution for a weak coupling versus temperature are compared with the exact results. For a weak coupling, or for a large enough N, the mean-field approximation agrees well with the exact values. For T not equal 0, new RPA modes appear which did not exist at T = 0.