Abstract
The phase diagram and the critical indices are investigated for the symmetric 16-vertex model on the square lattice by combining a variational series expansion and the coherent anomaly method. The nonuniversal critical exponents smoothly interpolate between two exactly solvable cases, namely the Baxter eight-vertex model and the Ising model.
Original language | English (US) |
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Pages (from-to) | 1203-1226 |
Number of pages | 24 |
Journal | Journal of Statistical Physics |
Volume | 72 |
Issue number | 5-6 |
DOIs | |
State | Published - Sep 1993 |
Externally published | Yes |
Keywords
- Vertex model
- coherent anomaly method
- critical behavior
- nonuniversality
- series expansion
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Mathematical Physics