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General Localization Lengths for Two Interacting Particles in a Disordered Chain

Pil Hun Song·Felix von Oppen
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Abstract

The propagation of an interacting particle pair in a disordered chain is characterized by a set of localization lengths which we define. The localization lengths are computed by a new decimation algorithm and provide a more comprehensive picture of the two-particle propagation. We find that the interaction delocalizes predominantly the center-of-mass motion of the pair and use our approach to propose a consistent interpretation of the discrepancies between previous numerical results.

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Pil Hun Song, Felix von Oppen. 1998-06-25. General Localization Lengths for Two Interacting Particles in a Disordered Chain. https://doi.org/10.1103/physrevb.59.46

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