68 citations · 143 across the 5 of their papers we have counts for
5 papers
Tight-binding Rashba model and statistical field theory
G. A. H. Schober, K. -U. Giering, M. M. Scherer +2
This document contains information supplementary to the article [1], but it is self-contained and can be read independently as a pedagogical review. In the first part, we explain o…
Functional renormalization and mean-field approach to multiband systems with spin-orbit coupling: Application to the Rashba model with attractive interaction
G. A. H. Schober, K. -U. Giering, M. M. Scherer +2
The functional renormalization group (RG) in combination with Fermi surface patching is a well-established method for studying Fermi liquid instabilities of correlated electron sys…
Self-energy flows in the two-dimensional repulsive Hubbard model
Kay-Uwe Giering, Manfred Salmhofer
We study the two-dimensional repulsive Hubbard model by functional RG methods, using our recently proposed channel decomposition of the interaction vertex. The main technical advan…
Frequency Dependent Vertex Functions of the (t,t')-Hubbard Model at Weak Coupling
Christoph Husemann, Kay-Uwe Giering, Manfred Salmhofer
We present a functional renormalization group calculation for the two-dimensional (t,t')-Hubbard model at Van Hove filling. Using a channel decomposition we describe the momentum a…
Random quantum Ising chains with competing interactions
David Carpentier, Pierre Pujol, Kay-Uwe Giering
In this paper we discuss the criticality of a quantum Ising spin chain with competing random ferromagnetic and antiferromagnetic couplings. Quantum fluctuations are introduced via…