We prove that the effective potential of the two-dimensional interacting continuous Fermi gas with infrared cutoff is an analytic function of the coupling strength near the origin. This is the starting point to study the infrared problem of the model without putting any ultraviolet cutoff, as usually done in the literature.
Benfatto, G. (2009). On the ultraviolet problem for the 2D weakly interacting fermi gas. ANNALES HENRI POINCARE', 10(1), 1-17 [10.1007/s00023-008-0397-1].
On the ultraviolet problem for the 2D weakly interacting fermi gas
BENFATTO, GIUSEPPE
2009-10-01
Abstract
We prove that the effective potential of the two-dimensional interacting continuous Fermi gas with infrared cutoff is an analytic function of the coupling strength near the origin. This is the starting point to study the infrared problem of the model without putting any ultraviolet cutoff, as usually done in the literature.File in questo prodotto:
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