Abstract.
We prove the convergence of the perturbative expansion, based on Renormalization Group, of the two point Schwinger function of a system of weakly interacting fermions in d = 2, with symmetric Fermi surface and up to exponentially small temperatures, close to the expected onset of superconductivity.
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Submitted 05/07/02, accepted 30/09/02
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ID="h1"Communicated by Joel Feldman
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Benfatto, G., Giuliani, A. & Mastropietro, V. Low Temperature Analysis of Two-Dimensional Fermi Systems with Symmetric Fermi Surface. Ann. Henri Poincaré 4, 137–193 (2003). https://doi.org/10.1007/s00023-003-0125-9
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DOI: https://doi.org/10.1007/s00023-003-0125-9