3 papers
cond-mat.str-el2020
Second-order functional renormalization group approach to quantum wires out of equilibrium
Christian Klöckner, Dante Marvin Kennes, Christoph Karrasch
The functional renormalization group (FRG) provides a flexible tool to study correlations in low-dimensional electronic systems. In this paper, we present a novel FRG approach to t…
cond-mat.str-el2020
Phases of translation-invariant systems out of equilibrium: Iterative Green's function techniques and renormalization group approaches
Christian Klöckner, Dante Marvin Kennes, Christoph Karrasch
We introduce a method to evaluate the steady-state non-equilibrium Keldysh-Schwinger Green's functions for infinite systems subject to both an electric field and a coupling to rese…
cond-mat.str-el2020
Non-equilibrium Properties of Berezinskii-Kosterlitz-Thouless Phase Transitions
Christian Klöckner, Christoph Karrasch, Dante Marvin Kennes
We employ a novel, unbiased renormalization-group approach to investigate non-equilibrium phase transitions in infinite lattice models. This allows us to address the delicate inter…