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VOLUME 94 (2011) | ISSUE 5 |
PAGE 438
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Two interacting particles in a random potential
D. O. Krimer∇*, R. Khomeriki, S. Flach∇
∇Max Planck Institute for the Physics of Complex Systems, D-01187 Dresden, Germany * Theoretische Physik, Universität Tübingen, 72076 Tübingen, Germany Physics Department, Tbilisi State University, 0128 Tbilisi, Georgia
Abstract
We study the scaling of the localization length of two interacting
bosons in a one-dimensional random lattice with the single particle
localization length. We consider the short-range interaction assuming that
the particles interact when located both on the same site. We discuss several
regimes, among them one interesting weak Fock space disorder regime. In this
regime we obtain a weak logarithmic scaling law. Numerical benchmark data
support the absence of any strong enhancement of the two particle
localization length.
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