scholarly journals On the critical behavior of the XX spin-1/2 chain under correlated quenched disorder

Author(s):  
João Carlos de Andrade Getelina

2004 ◽  
Vol 99 (6) ◽  
pp. 1201-1206 ◽  
Author(s):  
A. K. Murtazaev ◽  
I. K. Kamilov ◽  
A. B. Babaev


2002 ◽  
Vol 16 (27) ◽  
pp. 4027-4079 ◽  
Author(s):  
YU. HOLOVATCH ◽  
V. BLAVATS'KA ◽  
M. DUDKA ◽  
C. VON FERBER ◽  
R. FOLK ◽  
...  

In this review paper, we discuss the influence of weak quenched disorder on the critical behavior in condensed matter and give a brief review of the available experimental and theoretical results as well as results of MC simulations of these phenomena. We concentrate on three cases: (i) uncorrelated random-site disorder, (ii) long-range correlated random-site disorder, and (iii) random anisotropy. Today, the standard analytical description of critical behavior is given by renormalization group results refined by resummation of the perturbation theory series. The convergence properties of the series are unknown for most disordered models. The main object of this review is to discuss the peculiarities of the application of resummation techniques to perturbation theory series of disordered models.







1999 ◽  
Vol 59 (2) ◽  
pp. 855-860 ◽  
Author(s):  
L. De Cesare ◽  
M. T. Mercaldo


1988 ◽  
Vol 51 (1-2) ◽  
pp. 29-56 ◽  
Author(s):  
G. Forgacs ◽  
J. M. Luck ◽  
Th. M. Nieuwenhuizen ◽  
H. Orland


1998 ◽  
Vol 12 (12n13) ◽  
pp. 1301-1309
Author(s):  
G. Jug ◽  
B. N. Shalaev

We study the critical behavior of two-dimensional (2D) anisotropic systems with weak quenched disorder described by the Ising model (IM) with random bonds, the dilute N-color Ashkin–Teller model (ATM) and some its generalizations. It is shown that all these models exhibit the same critical behavior as that of the 2D-IM apart from some logarithmic corrections. The minimal conformal field theory (CFT) models with randomness are found to be described by critical exponents which are numerically very close to those of the pure 2D-IM.



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