# Pseudogap at hot spots in the two-dimensional Hubbard model at weak coupling

@article{Rohe2005PseudogapAH, title={Pseudogap at hot spots in the two-dimensional Hubbard model at weak coupling}, author={D. Rohe and W. Metzner}, journal={Physical Review B}, year={2005}, volume={71}, pages={115116} }

We analyze the interaction-induced renormalization of single-particle excitations in the two-dimensional Hubbard model at weak coupling using the Wick-ordered version of the functional renormalization group. The self energy is computed for real frequencies by integrating a flow equation with renormalized two-particle interactions. In the vicinity of hot spots, that is points where the Fermi surface intersects the umklapp surface, self energy effects beyond the usual quasi-particle… CONTINUE READING

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