115 citations · 230 across the 5 of their papers we have counts for
5 papers
Functional renormalization for spontaneous symmetry breaking in the Hubbard model
Simon Friederich, Hans Christian Krahl, Christof Wetterich
The phases with spontaneously broken symmetries corresponding to antiferromagnetic and d-wave superconducting order in the two-dimensional t-t'-Hubbard model are investigated by me…
Four-point vertex in the Hubbard model and partial bosonization
S. Friederich, H. C. Krahl, C. Wetterich
Magnetic and superconducting instabilities in the two-dimensional t-t'-Hubbard model are discussed within a functional renormalization group approach. The fermionic four-point vert…
Generation of d-wave coupling in the two-dimensional Hubbard model from functional renormalization
H. C. Krahl, J. A. Müller, C. Wetterich
Within the two-dimensional repulsive t-t'-Hubbard model, an attractive coupling in the d-wave pairing channel is induced by antiferromagnetic fluctuations. We investigate this coup…
Three-body scattering from nonperturbative flow equations
S. Diehl, H. C. Krahl, M. Scherer
We consider fermion-dimer scattering in the presence of a large positive scattering length in the frame of functional renormalization group equations. A flow equation for the momen…
Functional renormalization group for d-wave superconductivity in Hubbard type models
H. C. Krahl, C. Wetterich
The temperature dependence of d-wave superconducting order for two dimensional fermions with d-wave attraction is investigated by means of the functional renormalization group with…