“…Indeed, g 1 entering the expressions (52) and (54) for the susceptibility contains the set of all diagrams generated by summing 2k F electron-hole bubbles. 11 This can be seen from Fig.2 and from the recursion relation Eq. (22).…”
Section: E Modified-kanamori Approach In One Dimensionmentioning
confidence: 65%
“…We go through the exercise of formally generating the perturbative result through the auxiliary field (Hubbard-Stratonovich) method. This will allow us to exhibit the accuracy of standard perturbative techniques for a linearized spectrum in the Landau channel 6,11 and to find the infinite slope of the susceptibility in the zero temperature limit. But first, we must analyze the part of the Hamiltonian that we will take as the unperturbed one.…”
“…Indeed, g 1 entering the expressions (52) and (54) for the susceptibility contains the set of all diagrams generated by summing 2k F electron-hole bubbles. 11 This can be seen from Fig.2 and from the recursion relation Eq. (22).…”
Section: E Modified-kanamori Approach In One Dimensionmentioning
confidence: 65%
“…We go through the exercise of formally generating the perturbative result through the auxiliary field (Hubbard-Stratonovich) method. This will allow us to exhibit the accuracy of standard perturbative techniques for a linearized spectrum in the Landau channel 6,11 and to find the infinite slope of the susceptibility in the zero temperature limit. But first, we must analyze the part of the Hamiltonian that we will take as the unperturbed one.…”
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