Finite cluster approximation for bond and site dilution transverse ising model on square lattice

✍ Scribed by S.-L. Yan; C.-Z. Yang

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 282 KB
• Volume: 100
• Category: Article
• ISSN: 0038-1098
• DOI: 10.1016/s0038-1098(96)00496-6

✦ Synopsis

The critical behaviour of the bond and site dilution transverse Ising model on a square lattice with spin-l/2 is investigated within the framework of the finite cluster approximation (FCA). The phase diagrams, critical temperature, critical transverse field and percolation threshold are given. The FCA method is conceptually as simple as an ordinary mean field approximation (MFA) but gives much better results.