95 citations · 142 across the 5 of their papers we have counts for
5 papers
Temperature dependence of antiferromagnetic order in the Hubbard model
T. Baier, E. Bick, C. Wetterich
We suggest a method for an approximative solution of the two dimensional Hubbard model close to half filling. It is based on partial bosonisation, supplemented by an investigation…
Antiferromagnetic gap in the Hubbard model
T. Baier, E. Bick, C. Wetterich
We compute the temperature dependence of the antiferromagnetic order parameter and the gap in the two dimensional Hubbard model at and close to half filling. Our approach is based…
Symmetry breaking in the Hubbard model
Eike Bick
Almost all known high temperature superconductors are cuprates, which can be suitably modelled by the two dimensional Hubbard model. To understand the interplay of various long ran…
Correlation functions for composite operators in the Hubbard model
Tobias Baier, Eike Bick, Christof Wetterich
We compute the correlation functions for antiferromagnetic and d-wave superconducting fermion bilinears in a generalized mean field type approximation for the Hubbard model. For hi…
Spontaneous symmetry breaking in the colored Hubbard model
Tobias Baier, Eike Bick, Christof Wetterich
The Hubbard model is reformulated in terms of different ``colored'' fermion species for the electrons or holes at different lattice sites. Antiferromagnetic ordering or d-wave supe…