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In a recent letter [Phys. Rev. Lett. 78, 515 (1997); cond-mat/9612034] Roemerand Schreiber report on numerical calculations that led them to conclude thatthe previously observed enhancement of the localization length $L_2$ of twointeracting particles (TIP) vanishes in the thermodynamic limit. We point outthat such a claim (i) is in conflict with the scaling theory of localization,(ii) ignores a consistent picture from a wealth of published numerical data andanalytical investigations, and (iii) directly contradicts new numerical resultsobtained with a Green function method that is well adapted to the problem understudy. The claim of Roemer and Schreiber is based on extrapolating from L<360to infinity. Our data clearly shows the two particle localization length $L_2$to be significantly enhanced and independent of system size between L=100 andL=1000, as expected on physical grounds.Comment: 1 page, Revtex, one figur

Comment on “No Enhancement of the Localization Length for Two Interacting Particles in a Random Potential”