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.
Benfatto, G., Giuliani, A., Mastropietro, V. (2003). Low Temperature Analysis of Two-Dimensional Fermi Systems with Symmetric Fermi Surface. ANNALES HENRI POINCARE', 4, 137-193.
Low Temperature Analysis of Two-Dimensional Fermi Systems with Symmetric Fermi Surface
GIULIANI, ALESSANDRO;
2003-01-01
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.File in questo prodotto:
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