Correlations in Random Ising Chains at Zero Temperature

Physics – Condensed Matter

Scientific paper

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15 pages, plain TEX, figures upon request, SZFKI-94-FI1

Scientific paper

10.1088/0305-4470/27/9/015

We present a general method to calculate the connected correlation function of random Ising chains at zero temperature. This quantity is shown to relate to the surviving probability of some one-dimensional, adsorbing random walker on a finite intervall, the size of which is controlled by the strength of the randomness. For different random field and random bond distributions the correlation length is exactly calculated.

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