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Volume 111, Issue 1, 01 July 1999
111(1999); http://dx.doi.org/10.1063/1.479284View Description Hide Description
We study self-avoiding walks in an energetically disordered medium. We show that an effect interpreted as a localization phase transition in [A. Baumgärtner, J. Chem. Phys. 109, 10011 (1998)] actually is due to a sudden breakdown of effective ergodicity. While this problem occurs with any presently known Monte Carlo algorithm, there is a class of algorithms which at least warns the user when phase space sampling becomes insufficient.