51 citations · 110 across the 3 of their papers we have counts for
4 papers · 1 filter
Renormalization group flow for fermionic superfluids at zero temperature
P. Strack, R. Gersch, W. Metzner
We present a comprehensive analysis of quantum fluctuation effects in the superfluid ground state of an attractively interacting Fermi system, employing the attractive Hubbard mode…
Superconductivity in the attractive Hubbard model: functional renormalization group analysis
R. Gersch, C. Honerkamp, W. Metzner
We present a functional renormalization group analysis of superconductivity in the ground state of the attractive Hubbard model on a square lattice. Spontaneous symmetry breaking i…
Fermionic functional renormalization group for first-order phase transitions: a mean-field model
R. Gersch, J. Reiss, C. Honerkamp
First-order phase transitions in many-fermion systems are not detected in the susceptibility analysis of common renormalization-group (RG) approaches. Here we introduce a counterte…
Fermionic renormalization group flow into phases with broken discrete symmetry: charge-density wave mean-field model
Roland Gersch, Carsten Honerkamp, Daniel Rohe +1
We generalize the application of the functional renormalization group (fRG) method for the fermionic flow into the symmetry-broken phase to finite temperatures. We apply the scheme…