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 Ū (T) and the numerically calculated spin susceptibility χ (K- K′), the d -wave pairing interaction is well approximated by 3 2 Ū 2 χ (K- K′).
| Original language | English |
|---|---|
| Article number | 134519 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 75 |
| Issue number | 13 |
| DOIs | |
| State | Published - Apr 27 2007 |