The correlation functions of certain random antiferromagnetic spin-1/2 critical chains

28 Jan 2020 Getelina João C. Hoyos José A.

We study the spin-spin correlations in two distinct random critical XX spin-1/2 chain models via exact diagonalization. For the well-known case of uncorrelated random coupling constants, we study the non-universal numerical prefactors and relate them to the corresponding Lyapunov exponent of the underlying single-parameter scaling theory... (read more)

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Categories


  • DISORDERED SYSTEMS AND NEURAL NETWORKS
  • STATISTICAL MECHANICS