Corrections to the critical temperature in 2D Ising systems with Kac potentials

1995 ◽  
Vol 78 (3-4) ◽  
pp. 1131-1138 ◽  
Author(s):  
M. Cassandro ◽  
R. Marra ◽  
E. Presutti
Keyword(s):  
Critical Temperature ◽  
Kac Potentials ◽  
Ising Systems

THERMALLY DILUTED ISING SYSTEMS

Fractals ◽  
2003 ◽  
Vol 11 (supp01) ◽  
pp. 53-65
Author(s):  
MANUEL I. MARQUÉS ◽  
JULIO A. GONZALO ◽  
JORGE ÍÑIGUEZ
Keyword(s):  
Critical Temperature ◽  
Ising Model ◽  
Disordered Systems ◽  
Short Range ◽  
Finite Size ◽  
Universality Class ◽  
Finite Size Scaling ◽  
Local Distribution ◽  
Ising Systems ◽  
Theoretical Predictions

In this paper finite size scaling techniques are used to study the universality class of thermally diluted Ising systems, in which the realization of the disposition of magnetic atoms and vacancies is taken from the local distribution of spins in the pure original Ising model at criticality. The critical temperature, the critical exponents and therefore the universality class of these thermally diluted Ising systems depart markedly from the ones of short range correlated disordered systems. This result is in agreement with theoretical predictions previously made by Weinrib and Halperin for systems with long range correlated disorder.

Surface tension in Ising systems with Kac potentials

1996 ◽  
Vol 82 (3-4) ◽  
pp. 743-796 ◽  
Author(s):  
G. Alberti ◽  
G. Bellettini ◽  
M. Cassandro ◽  
E. Presutti
Keyword(s):  
Surface Tension ◽  
Kac Potentials ◽  
Ising Systems

Upper Bounds on the Critical Temperature for Kac Potentials

1997 ◽  
Vol 88 (3/4) ◽  
pp. 537-566 ◽  
Author(s):  
M. Cassandro ◽  
R. Marra ◽  
E. Presutti
Keyword(s):  
Critical Temperature ◽  
Upper Bounds ◽  
Kac Potentials

TRANSFER TENSOR VARIATION METHOD APPLIED TO RANDOM ISING SYSTEMS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1251-C8-1252
Author(s):  
W. Brauneck ◽  
O. Jagodzinski ◽  
D. Wagner
Keyword(s):  
Variation Method ◽  
Ising Systems
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