Mean-field renormalization group for the q-state clock spin-glass model

✍ Scribed by Shyh-Tzer Chen

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 258 KB
• Volume: 229
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/0378-4371(96)00015-5

✦ Synopsis

The mean-field renormalization group is used to study the phase diagrams of a d-dimensional q-state clock spin-glass model. We found, for q = 3 clock, the transition from paramagnet to spin glass is an isotropic spin-glass phase, but for q = 4 clock, the transition from paramagnet to spin glass is an anisotropic spin-glass phase. However, for q ~> 5 clock, the result of anisotropic spin-glass phase depends on the temperature and the distribution of random coupling. While the coordinate number approaches infinity, the critical temperature evaluated by the mean-field renormalization group method is equal to that by the replica method.