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We discuss the effect of Fermi surface curvature on long-distance/timeasymptotic behaviors of two-dimensional fermions interacting via a gapless modedescribed by an effective gauge field-like propagator. By comparing thepredictions based on the idea of multi-dimensional bosonization with those ofthe strong- coupling Eliashberg approach, we demonstrate that an agreementbetween the two requires a further extension of the former technique.Comment: Latex, 4+ pages. Phys. Rev. Lett., to appea

Effect of Fermi Surface Curvature on Low-Energy Properties of Fermions with Singular Interactions