2001/11/07 by Tatiana G. Rappoport, A. Saguia, Beatriz Boechat +4
Physics and Astronomy · #Quantum chaos and dynamical systems #Quantum many-body systems #Theoretical and Computational Physics #cond-mat.dis-nn #cond-mat.str-el
paper · pdf · doi:10.1209/epl/i2003-00309-6
published as Europhysics Letters 61 (6): 831-837 2003 · 4 pages, 4 figures
arxiv created 2001/11/07 · openalex publication_date 2003/03/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
The effect of strong disorder on the one-dimensional Kondo necklace model is studied using a perturbative real-space renormalization group approach which becomes asymptotically exact in the low-energy limit. The phase diagram of the model presents a random quantum critical point separating two phases; a random XY-like phase similar to a quantum disordered XY chain and the random Kondo phase. We also consider an anisotropic version of the model which for strong disorder maps on the random transverse field Ising model.