The behavior of the two-particle spectral function, S(q,co), is examined in the hydrodynamic regime, at the mobility edge in a model for the integer quantized Hall effect. Results are presented from numerical diagonalization of the Hamiltonian for finite systems. For q 2 /co small, S(q,co) has a conventional, diffusive form. For q 2 /co large, the novel dependence Siq.^ -co'^q ~2 +TJ is obtained, with 77^0.38 ± 0.04.
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