Improved Phase Diagrams of Ashkin-Teller Model

• Authors: P. Pawlicki , G. Kamieniarz , P. Kozlowski , R. Dekeyser , J. Rogiers
• Languages of publication: EN

Abstracts

EN

The phase diagram of the Askhin-Teller model in two dimensions is determined. Numerical calculations are performed for the simple square L × L lattice using transfer matrix technique. Exploiting finite-size scaling all unknown critical lines were obtained with good accuracy. An extended version of the Ashkin-Teller model is also considered within the molecular field renormalization group method and the critical surface for three-parameter odd-parity Hamiltonian is calculated.

Keywords

EN

75.40.Mg; 75.10.Hk; 64.60.Ak

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1997
• Volume: 92
• Issue: 2
• Pages: 453-458

Dates

published

1997-08

Contributors

author

P. Pawlicki

• Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-624 Poznań, Poland

author

G. Kamieniarz

• Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-624 Poznań, Poland

author

P. Kozlowski

• Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-624 Poznań, Poland

author

R. Dekeyser

• Instituut voor Theoretische Fysica, Katholieke Universiteit Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium

author

J. Rogiers

• Instituut voor Theoretische Fysica, Katholieke Universiteit Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium