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- Fermi National Accelerator LaboratoryUS206 papers
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15 papers · 2 filters
Oscillatory dynamics and non-markovian memory in dissipative quantum systems
D. M. Kennes, O. Kashuba, M. Pletyukhov +2
The nonequilibrium dynamics of a small quantum system coupled to a dissipative environment is studied. We show that (1) the oscillatory dynamics close to a coherent-to-incoherent t…
The interacting resonant level model in nonequilibrium: finite temperature effects
D. M. Kennes, V. Meden
We study the steady-state properties as well as the relaxation dynamics of the nonequilibrium interacting resonant level model at finite temperatures. It constitutes the prototype…
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…
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…