The effect of Fermi surface curvature on low-energy properties of fermions with singular interactions
A. V. Chubukov, D. V. Khveshchenko
Abstract
We discuss the effect of Fermi surface curvature on long-distance/time asymptotic behaviors of two-dimensional fermions interacting via a gapless mode described by an effective gauge field-like propagator. By comparing the predictions based on the idea of multi-dimensional bosonization with those of the strong- coupling Eliashberg approach, we demonstrate that an agreement between the two requires a further extension of the former technique.
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