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An alternative functional renormalization group approach to the single impurity Anderson model
Michael Kinza, Jutta Ortloff, Johannes Bauer +1
We present an alternative functional renormalization group (fRG) approach to the single-impurity Anderson model at finite temperatures. Starting with the exact self-energy and inte…
Self-energy feedback and frequency-dependent interactions in the functional renormalization group flow for the two-dimensional Hubbard model
Stefan Uebelacker, Carsten Honerkamp
We study the impact of including the self-energy feedback and frequency-dependent interactions on functional renormalization group grows for the two-dimensional Hubbard model on th…
Interacting electrons on trilayer honeycomb lattices
Michael M. Scherer, Stefan Uebelacker, Daniel D. Scherer +1
Few-layer graphene systems come in various stacking orders. Considering tight-binding models for electrons on stacked honeycomb layers, this gives rise to a variety of low-energy b…
Antiferromagnetism in the Hubbard Model on the Bernal-stacked Honeycomb Bilayer
Thomas C. Lang, Zi Yang Meng, Michael M. Scherer +5
Using a combination of quantum Monte Carlo simulations, functional renormalization group calculations and mean-field theory, we study the Hubbard model on the Bernal-stacked honeyc…
Renormalization group flow for fermions into antiferromagnetically ordered phases: Method and mean-field models
Stefan A. Maier, Carsten Honerkamp
We present a functional renormalization group flow for many-fermion lattice models into phases with broken spin-rotational symmetry. The flow is expressed purely in terms of fermio…
Critical scales in anisotropic spin systems from functional renormalization
Stefan Göttel, Sabine Andergassen, Carsten Honerkamp +2
We apply a recently developed functional renormalization group (fRG) scheme for quantum spin systems to the spin-1/2 antiferromagnetic XXZ model on a two-dimensional square lattice…