Long-time tails in the random transverse Ising chain

  title={Long-time tails in the random transverse Ising chain},
  author={Zhong-qiang Liu and Xiang-mu Kong and Su-rong Jiang and Ying-jun Li},
Taking one-dimensional random transverse Ising model (RTIM) with the double-Gaussian disorder for example, we investigated the spin autocorrelation function (SAF) and associated spectral density at high temperature by the recursion method. Based on the first twelve recurrants obtained analytically, we have found strong numerical evidence for the long-time tail in the SAF of a single spin. Numerical results indicate that when the standard deviation {\sigma}_{JS} (or {\sigma}_{BS}) of the… CONTINUE READING