Notes on the Hubbard model at d = ∞

Tadahiro Miyao

Yin Zhong, Hong‐Gang Luo

This is a note on the derivation of path integral formulism for $Z_{2}$ slave-spin representation of Hubbard model and may be helpful for further study in related works. We are rather happy to receive any comments and other discussions are welcome.

Douglas J. Scalapino

Here we discuss quantum Monte Carlo and the Hubbard model. We note that while there is a fermion sign problem for the doped Hubbard model, Monte Carlo calculations have shown that the leading pairfield susceptibility has d-wave symmetry and that the pairing interaction is mediated by S = 1 particle-hole fluctuations.

Gang Su

Gang Su