Ensemble renormalization group for the random-field hierarchical model.
Phys Rev E Stat Nonlin Soft Matter Phys
; 89(3): 032132, 2014 Mar.
Article
in En
| MEDLINE
| ID: mdl-24730815
ABSTRACT
The renormalization group (RG) methods are still far from being completely understood in quenched disordered systems. In order to gain insight into the nature of the phase transition of these systems, it is common to investigate simple models. In this work we study a real-space RG transformation on the Dyson hierarchical lattice with a random field, which leads to a reconstruction of the RG flow and to an evaluation of the critical exponents of the model at T=0. We show that this method gives very accurate estimations of the critical exponents by comparing our results with those obtained by some of us using an independent method.
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Collection:
01-internacional
Database:
MEDLINE
Type of study:
Clinical_trials
Language:
En
Journal:
Phys Rev E Stat Nonlin Soft Matter Phys
Journal subject:
BIOFISICA
/
FISIOLOGIA
Year:
2014
Document type:
Article