A Numerical Study of the Random Transverse-Field Ising Spin Chain
A. P. Young, H. Rieger
Abstract
We study numerically the critical region and the disordered phase of the random transverse-field Ising chain. By using a mapping of Lieb, Schultz and Mattis to non-interacting fermions, we can obtain a numerically exact solution for rather large system sizes, L 128. Our results confirm the striking predictions of earlier analytical work and, in addition, give new results for some probability distributions and scaling functions.
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