152 citations · 926 across the 27 of their papers we have counts for
12 papers · 1 filter
Slave-Boson analysis of the 2D Hubbard model
David Riegler, Michael Klett, Titus Neupert +2
We present a comprehensive study of the 2D one-band Hubbard model applying the spin rotation invariant slave-boson method. We utilize a spiral magnetic mean field and fluctuations…
Transport through asymmetric two-lead junctions of Luttinger liquid wires
D. N. Aristov, P. Wölfle
We calculate the conductance of a system of two spinless Luttinger liquid wires with different interaction strengths g_1, g_2, connected through a short junction, within the scatte…
Tunable Kondo-Luttinger systems far from equilibrium
C. -H. Chung, K. V. P. Latha, K. Le Hur +2
We theoretically investigate the non-equilibrium current through a quantum dot coupled to one- dimensional electron leads, utilizing a controlled frequency-dependent renormalizatio…
Transport through a Kondo quantum dot: Functional RG approach
Holger Schmidt, Peter Woelfle
We apply the functional renormalization group (FRG) method to calculate the conductance of a quantum dot in the Kondo regime. Starting from the exact FRG equations in Keldysh formu…
Multiscale quantum criticality: Pomeranchuk instability in isotropic metals
Mario Zacharias, Peter Wölfle, Markus Garst
As a paradigmatic example of multi-scale quantum criticality, we consider the Pomeranchuk instability of an isotropic Fermi liquid in two spatial dimensions, d=2. The corresponding…
Conductance through a potential barrier embedded in a Luttinger liquid: nonuniversal scaling at strong coupling
D. N. Aristov, P. Woelfle
We calculate the linear response conductance of electrons in a Luttinger liquid with arbitrary interaction g_2, and subject to a potential barrier of arbitrary strength, as a funct…
Electron transport in the four-lead two-impurity Kondo model: Nonequilibrium perturbation theory with almost degenerate levels
V. Koerting, J. Paaske, P. Wölfle
The eigenstates of an isolated nanostructure may get mixed by the coupling to external leads. This effect is the stronger, the smaller the level splitting on the dot and the larger…
Transport of interacting electrons through a potential barrier: nonperturbative RG approach
D. N. Aristov, P. Woelfle
We calculate the linear response conductance of electrons in a Luttinger liquid with arbitrary interaction g_2, and subject to a potential barrier of arbitrary strength, as a funct…
Transconductance of a double quantum dot system in the Kondo regime
V. Koerting, P. Wölfle, J. Paaske
We consider a lateral double-dot system in the Coulomb blockade regime with a single spin-1/2 on each dot, mutually coupled by an anti-ferromagnetic exchange interaction. Each of t…
Fermi liquid near a quantum critical point
P. Wölfle, A. Rosch
We investigate the approach to the quantum critical point of a Pomeranchuk instability from the symmetric, disordered side of the phase diagram. In the low-temperature limit, a Fer…
Nonequilibrium Singlet-Triplet Kondo Effect in Carbon Nanotubes
J. Paaske, A. Rosch, P. Woelfle +3
The Kondo-effect is a many-body phenomenon arising due to conduction electrons scattering off a localized spin. Coherent spin-flip scattering off such a quantum impurity correlates…
Nonequilibrium Transport through a Kondo Dot in a Magnetic Field: Perturbation Theory
J. Paaske, A. Rosch, P. Wölfle
Using nonequilibrium perturbation theory, we investigate the nonlinear transport through a quantum dot in the Kondo regime in the presence of a magnetic field. We calculate the lea…