Quantum Effects and Critical Behavior in Low-Dimensional Spin-1/2 Systems

• Authors: G. Kamieniarz , G. Musial , L. Dębski , M. Bieliński , R. Dekeyser
• Languages of publication: EN

Abstracts

EN

The critical coupling and spontaneous magnetization curve for the 2D-Ising model are calculated using the effective-field method with correlations. An application of the method to the quantum S=1/2 1D-Heisenberg model is presented and reliable low-temperature estimates of the specific heat are evaluated.

Keywords

EN

75.40.Mg; 64.60.-i; 75.10.Hk; 75.10.Jm

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1997
• Volume: 92
• Issue: 2
• Pages: 445-447

Dates

published

1997-08

Contributors

author

G. Kamieniarz

• Computational Physics Division, Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

G. Musial

• Computational Physics Division, Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

L. Dębski

• Computational Physics Division, Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

M. Bieliński

• Computational Physics Division, Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

R. Dekeyser

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