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Spin Susceptibility Representation of the Pairing Interaction for the two-dimensional Hubbard Model

T. A. Maier·M. Jarrell·D. J. Scalapino
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Abstract

Using numerical dynamic cluster quantum Monte Carlo results, we study a simple approximation for the pairing interaction of a two-dimensional Hubbard model with an on-site Coulomb interaction $U$ equal to the bandwidth. We find that with an effective temperature dependent coupling $\Ub(T)$ and the numerically calculated spin susceptibility $χ(K-K')$, the d-wave pairing interaction is well approximated by $\frac{3}{2} \Ub^2χ(K-K')$.

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T. A. Maier, M. Jarrell, D. J. Scalapino. 2006-12-22. Spin Susceptibility Representation of the Pairing Interaction for the two-dimensional Hubbard Model. https://doi.org/10.1103/physrevb.75.134519

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